Have you ever gone back to playing Guitar Hero 2 recently and compared how different it was from GH3/Rock Band? I love the song choices (Sweet Child O' Mine, Jordan) but it's much more difficult to hammer on/pull off.
Pandora ftw.
Going from GH3 it's hard to get used to, but from Rock Band it's the same (RB uses the same HO/PO engine as GH2). But yeah, the songs are really fun in it.
My GH2 doesn't work.