Rock Band 2
Already out
Better graphics
Funnerer... er
New customization for characters
Not over-charted mayhem
TONS of songs
Able to switch characters to other instruments, like a singer can be switched to a drummer, if i remember correctly
Guitar Hero: World Tour
Over charted mayhem
Not out yet
Not that good looking characters
Not really customizable
It can't be called Guitar Hero anymore with singing and drums now
I don't trust them with songs ever since Through the Fire and Flames, it's not even a guitar you're playing in the beginning
Not as much songs as Rock Band/Rock Band 2
Song creator?! Are they nuts? I can imagine the 'Through the Fire and Flames' type of songs now... Only worse...
So i go with Rock Band 2
That's my opinion about the two games, if you don't like it, oh well...