Is Rock Band on the Wii and PS2 the same as Rock Band on the XBox360 and PS3?
Yes! And no. The core game play is the same across all four systems, in that you can play tons of awesome songs on your choice of four instruments, either by yourself or in a full band. Unfortunately, due to hardware limitations, some of the more secondary features, such as a more robust World Tour mode, the character creator, and online game play are not available on Rock Band on the PS2 and Wii.