Actually no he will not win at the age of 13. And you can see the experience difference between a 13 year old and 30 year old when it comes to using their powers. When the 30 year old Tobi used kamui feint on Fu and Torune, that was the same tactics that Minato use on a 13 year old Obito. He knew that Obito materializes when he’s about to warp someone, so what he did is ftg behind Obito while he was trying to warp Minato’s body so that he can strike a solid body. Since Fu and Torune do not have Ftg they used the same method with a to person body. They used one as a sacrifice so that one of them would strike Obito from when he materializes to warp, just like Minato was doing. Torune was playing Minato’s role when he striked him from behind while Fu was the bait to make Obito materialize his body to warp.
That plan would’ve worked on a 13 year old Obito because Minato succeeded. That plain failed against a 30 year old who can feint his kamui as a counterattack.
You comparing a 13 year old Obito to a 30 year old Tobi is like comparing part 1 Naruto demon form Naruto vs Orochimaru to a Adult demon form Naruto vs Orochimaru. You wouldn’t be foolish enough to say that Adult demon form Naruto will still lose to Orochimaru that beat him when he was a 13 year old kid.
That’s a whole lot of speculations because the jubi does not increase your striking speed because that’s fanfic. Minato letting his guard down is also fanfic, I could say that kid Obito let his guard down against Minato just because he said “sensei” and he hesitated.
So jubi powers are hardly relevant here, Obito was already a sensor without jubi, the jubi did not increase his striking speed, Obito use the black receivers imbedded in his body to stop Minato too (tsb not needed) just like Madara did to Tobirama, and the rinnegan was never used because he couldn’t control it, the eye was just too powerful for him to use.
Idk why you are comparing Minato with Fuu and Torune. Minato would have still defeated 30 years Obito, no doubt. FTG is too quick for him. I mean, Obito only had his arms to fight against Fuu and Torune but still won, even though with weapons it would have been a lot easier. Obito is stronger with chains or other weapons. Well, it is also your speculations, 14 years Obito was strong enough to defeat many Anbus in that age, how can you complain? Fuu and Torune were strong yes, but they're attacks was not fast. Same tactic at most, but their plan didn't succeed as you mentioned. Minato would have completed his task once again if he ever battled Obito in that mode.
Besides, Minato's role was more superior than Fuu and Torune. His FTG was a direct attack at his opponent, because once the kunai had reached close proximity to Obito, or past him, he teleported to the said kunai, immediately attacked Obito from his blind-spot. The speed at which this technique is executed along with the unpredicted secondary attack is such that even an individual who possesses the Sharingan is unable to react in time. Yes, reaction, it doesn't matter how experienced Obito became, FTG is still quick to dodge.
Here you assess without coming up with a good example. 30 years Obito is indeed strong and more experienced, but don't forget that 14 years Obito had to control Kyuubi as well and battling Minato at the same time. 14 Years Obito without controlling Kyuubi would have defeated Fuu and Torune more quicker than ever. This Obito would have given Minato a good match as well, but still the outcome would still be the same.
About that Juubi thing, Kishi had to seriously nerf Minato back then for the sake of the plot, so he would lose his arm against Juubito and not letting it regenerate was ridiculous, but managed to compete against Obito and Madara when they absorbed the Juubi. Say whatever you want, but this is right, Minato and Hiruzen didn't used their full strength.
"So jubi powers are hardly relevant here, Obito was already a sensor without jubi, the jubi did not increase his striking speed". Where did you know that?
Here it looks like you just write without giving me a fact though. Juubi itself is composed of and manipulates natural energy, and only natural energy and taijutsu can compete against it. On the other hand, becoming a Juubi Jinchuriki can sense chakra around them and can sense attacks without the need to see them. So it is obvious that Obito with Juubi was able to sense in a whole different lvl, and his striking speed was better.