but Edo Tensai is that thing Orochimaru did in Part 1 where he resurrected the First and Second Hokages to fight the Third. The only way to beat it is to
1) seal the resurrected
2) have the souls move on
3) make the caster break the jutsu
also Naruto/Kyuubi and Killer Bee/Hachibi are fighting the other Tailed beast under the control of Tobi, while the five Kages are fighting Madara Uchiha. The latter of those fights is the most interesting because Tobi has been claiming to be Madara Uchiha for half of Shippuden.
ShadowLugia, I was messing with you, seeing as how you switched back quickly.
I'll admire MMZ series for its plot, but I will always despise its gameplay and perfectionist attitude.