Okay.
First if we know say that Minato and Nagato is standing face to face. Minato throws his kunais at Nagato, Nagato uses ST MInato after that throws one more Nagato is forced to dodge when he does that Minato will appear use his rasengan if it gets absorbed Minato will mark him than it is over.
No, Nagato will simply grab onto Minato like he did with Naruto and try to rip out his soul. Nagato also has the Asura path to defend himself too. Shinra tensei is not Nagato's only attack.
Second if Nagato start out with his ST MInato will do as B did and just counter attack and Nagato will let him do that so that he can absorb his charkra but what happens when Minato Touch his opponent, yes the opponent lose..
Nagato was not healthy against Bee, so he absorbed his chakra. Again, Nagato will just try to rip out his soul as Nagato is already healthy this time. (I'm assuming hes healthy anyway)
Summons well this is one of the point where Minato lacks but he can prob summon all the frogs Jiraiya could but we don't know for sure, But Nagato has gedo mazo. But when he uses gedo mazo yeah Minato can easily counter it's attacks Yeah maybe even teleport it and use it against Nagato who knows. And it is also hard For Nagato to move when having those steal things in the back.
Again, Nagato won't be just relying on the summons.
If Nagato goes for CT, well first it also takes a little while for Nagato to release the jutsu, and minato will prob use that to his advantage, and I don't see why Minato can't just teleport the core of CT. When I say Minato will use it to his advantage I mean he will prob throw his kunais at him to force him to use ST.
How will Minato use it to his advantage? Nagato can do more than one thing at once as shown against Bee and Naruto. And I'm not sure if Minato can teleport the core of CT so easily. When he teleported the Bijuu bomb from Kurama, it looked like the bomb was flying towards the the teleport. I don't know if Minato can just teleport anything that is stationary like the core, unless he is actually touching it, and even then, the core will be huge by that time.
To the asura path well Minato should be able to dodge the attacks. And maybe use space time barrier to teleport some of the attacks..
He will be using Asura path in support with the other paths.
MInato was able to kill of 50 so incrediple fast, and when he saved rin and kakashi from the other ninjas even though there was no kunais thrown around he still defeated them all...
Fodder ninja does not equal Nagato; he won't be able to defeat Nagato without use of FTG.
Ma and pa also knew Minato prob meaning that he could also summon them, he could also summon gerotora the scroll toad so he prob summon some other toads too.
It took ages for Jiraiya to summon these two, so Minato will probably take a long time too. In that time, Nagato could have easily defeated Minato by then. Remember, last time Jiraiya was only dealing with the animal path. This time, he is dealing with all the paths from Nagato. It's exponentially harder to deal with that.