So on the suggestion of some friends on the Base, I decided to make a thread showing that Kakuzu has the means to defeat Minato. Now, does this mean that Kakuzu wins all of the time....NO. Does it mean that Kakuzu wins 99% of the time....NO. It is nearly impossible to determine who would win a certain ammount of battles due to the fact that battle situations can constantly change within various battle scenarios.
So without further ado, here are some basic counters to Minato's basic techniques.
Flying Thunder God
1) Doton: Domu. With Earth Spear, Kakuzu's body is turned into a diamond hard substence. As a result nothing can truly break through it unless it happens to be a Raiton styled attack. As a result, a typical Kunai slash is ineffective against such an affront.
2) Earth Grudge Tendrils. The Tendrils that make up Kakuzu's body gives him two manners in which he can plausibly counter the slash and speed of the Flying Thunder God. First, his unique body sturcture allows for sword wounds to be made...as a rag-doll body, Kakuzu can simply stitch himself up again. An example of this would be seen when Izumo and Kotetsu slashed Kakuzu during the war arc. Instead of turning partially paper like most normal Edo bodies due...Kakuzu simply had some of his tendrils expose themeselves. Secondly (however less likely) is the idea of an attack. These black threads have been shown to have piercing strength stronge enough to pierce the bodies of both Kakashi and Naruto. As such, it is plausible that he could simply fire off his tendrils in all directions.
3) Destruction of Kunai. Kakuzu has two techniques that cause MASSIVE AoE attacks, that would be great for either moving and/or destroying FTG Kunai!
i) Wind Style: Pressure Damage
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The huge area and blast of wind is powerful enough to blow away the Kunai...thus blowing away the mobility of Minato's FTG and probalby destroying some of the Kunai.
ii) Fire Style: Zukkaku
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A gigantic fire blast, like Zukakku, is capable of obliterating the Kunai or at least throwing them back creating a safe Zone for Kakuzu
Rasengan
Rasengan is the signature attack Minato has used in conjunction with the Flying Thunder God. As I have mentioned above, the Flying Thunder God has multiple ways to be countered using Kakuzu's inventory of moves. So now, instead of restating everything from above, I shall simply make notes of how Kakuzu can counter the Rasengan as the attack in and of itself.
Firstly, the Rasengan is a physical attack simply composed of spiraling chakra. As such, it is a blunt attack as opposed to a Piercing attack. This means that it has to physically dominate the target of the Jutsu. The problem for Minato comes from Doton: Domu. This justu, as I have said before, gives Kakuzu daimond armoured skin. For example Kakuzu was able to tank an explosive tag
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. A second example is that he tanked Choji's Spiked Human Tank jutsu with no apparant damage
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The significance of this is that Diamond is the hardest substence on the planet. As such, nothing other than Diamond can even scratch this stone, and in conclusion, nothing can truly penetrate Doton: Domu unless it is a lightning affinity attack. As a result, the blunt attack of the Rasengan does not affect the Earth Spear.
Minato would have needed a lightning affinity or to have perfected an elemental manipulation to the Rasengan to break past Kakuzu's Doton: Domu.
Space Time Barrier
Firstly this jutsu requires Minato to hold a FTG Kunai. As such, any of the ones that are blown away via Kakuzu's AoE jutsu are basically thrown away from the battle. After that, Minato had to stand still in order to absorb the attack
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. As such, he's vulnerable to the the attacks from the other surrounding masks as well as from Kakuzu via Taijutsu. The other problem is that his redirection of his attacks have to be where his FTG Kunai are. This means that if Kakuzu has destroyed/ taken away the Kunai from his position, he cannot use this offensively, and only to save himself.
Frog Summon: Gammabunta
The Frog Summon is not as great of a threat as one would origionally think. For starters, Gammabunta's elemental attacks have only been him spewing oil with Jiraiya's Katon. Since Minato has not notable Element, he cannot use this attack. On Kakuzu's side, he is capable of launching his AoE jutsu as very painful attacks for a large target. In addition, Kakuzu can amplify his standard attacks by fusing his masks. The combination of the fire and wind masks created a large scale attack such as the one he used on Kakashi
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In addition, the masks have a fair ammount of agility as they were able to dodge Choji's large sized attack in order to jump back into Kakuzu (*Note: Follow the Footnote for two pages*)
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. This gives them an advantage in mobility against Gammabunta as he himself was unable to hit Pain during his dodging (*Note: Follow the Footnote for one more page than the one it initially shows)
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As a result, I would say that the Masks can dodge as well as attack/defeat the Frog Summon.
A Counter Argument
In discussion with other members on the base on this matter, I was informed that some people would argue, "What if Minato uses 10 Rasengans?" Well my response is how can he use 10 Rasengans at one time?! Minato Namikaze only has two hands. As such, a maximum number of Rasengans he can use are 2....also, if he uses clones, he'd have to attack using at least 5 clones (assuming each use 2 rasengans). However, this brings up another problem. Minato can no longer throw a FTG Kunai against the opponent meaning he has to have a marker placed before hand. Aside from the placement matter, there is the issue of physical occupation of space....being a fully grown man, Minato takes up a fair ammount of space....to have five of him space out and all hit him at one time.
Conclusion
Kakuzu's advantage over Minato (and the primary reason he has a chance to be victorious in combat) is because of his Doton: Domu technique. Because Minato has not shown a single attack that has the elemental advantage (AKA: Raiton) nor has he shown any attacks with high piercing attacks, this technique should hold out. His wide area effect jutsu not only destroy his FTG Kunai, but they also scatter them to the peremiter of a combat arena. This means that the area directly around Kakuzu is void of FTG Kunai. Because of this, he is able to remain relatively clear of Minato's FTG Ambushes.
In addition, Kakuzu has more combat experience and to back that up he has one of the highest levels of endurance/stamina to be shown in the series.
Thank you for your time!