Scenario 1: Minato still wins this, the only one even relevant is nagato, however even he gets wrecked when his CST gets tanked, and CT gets fodderred by TBB, everyone else either gets blitzed or turned to paste
Scenario 2: Minato and Naruto win mid diff at most, again no one in the akatsuki is even a factor, leaving only madara and sasuke, whose PS slashes are not doing shit to their avatars even in the slightest, as naruto and minatos proceed to eradicate their PS through flash and continous TBB,
Scenario 3 & 4: Madara can take out one of them by himself but the other can then clean up the rest with ease, sasuke himself still doesnt stand a chance against either of the 2, neither does nagato, as once they are down, the father son collaborate and take out madara