With regards to the Guitar Hero version, I disagree. According to the Guitar Hero developers, when they obtain the master tracks of a song they try and leave them unedited as much as possible, which often means that songs that normally fade out have their original studio endings restored. What Rock Band does is just try and find a suitable ending to the song (hence the acapella ending), which is fine but sometimes leads to abrupt endings where the song just ends on a suitable chord.

Livin' on a Prayer is a great example of this. In both GH and Rock Band, after the key change, where the SWW version fades out Tico does a big snare roll and the band go back into the talkbox rhythm from the intro. It's pretty cool, because in GH World Tour we can hear Richie do an 'acapella' talk box outro solo with no other instruments. Rock Band restores the intro reprise too but ends it abruptly before Richie's talkbox outro.

I've personally ripped the GH audio and replaced the Slippery versions, because I hate fade-outs. Plus it's great to hear the song as originally recorded.

Meh, while I'm in a "Bon Jovi in GH/RB" thread I might as well plug my Dry County Guitar Hero II custom: