Wow, I wasn't expecting such a huge debate about this game when I came on here.
Anyway, apart from the longer load times (Wii version loads faster) the game isn't really too much different. I picked up the 360 version (and I already had the JP Wii version). The controls are a bit awkward to get used to (using the right stick for a lot of stuff), but otherwise the game is still fun. I've only gotten through the first two "bosses", but I'm enjoying the 360 port.
It's nice being able to switch the voices to Japanese. (The Wii version was English only) Travis' JP voice actor is the same guy who voices Roronoa Zoro in One Piece & Mugen in Samurai Champloo, so it's cool hearing him doing the voice.
Other than those differences there isn't really any reason to pick up the new version instead of the Wii version though. (The PS3 has one less difference since that one is censored like the JP Wii version, the 360 version is uncensored like the USA Wii version)
starcraft: "I and every PS3 fanboy alive are waiting for Versus more than FFXIII.
Me since the games were revealed, the fanboys since E3." 
Skeeuk: "playstation 3 is the ultimate in gaming acceleration"
