In case you didn't see our urgent post and the stream, we want to give you an important update about P4U.
Kubo bought both PS3 and Xbox 360 versions of P4U and tried the online play on his stream. The 360 version had an unplayable lag (heavy slowdown). He tested with 4 different users. He also tried switching back and forth to training mode. The problem was really the online play.
He then tried the PS3 version. The online play was okay on PS3.
You probably know Kubo as an UMvC3 player, but when he goes to the arcades, he plays P4U as main game.