"Guys, for the PS3, let's just completely spaz out."

Too true.
I can only imagine that it has something to do with the online gameplay modes. Maybe they are attempting the ability to fight cross-platform (360 vs. PS3?) Is that even physically possible?
There's not much else it could be other than online issues, in my guesstimation ... even if they're waiting until T6's "Bloodline Revolution" upgrade release (supposedly December 2008) it still wouldn't take 9+ months to release a game designed to be run on the PS3 hardware.
I don't know... I haven't even tried to play Soul Calibur 4 online yet (as a comparison,) but I've heard it's pretty atrocious.
As for the loss of an "exclusive," well, PS3 users still have
Fox Hunt (with PS1 BC!)

And hey, maybe someday, that long rumored port of
Dead Rising will come along...