looked at 'em again, and it seems like some of the videos have another audio layer on top
this one, for example:
1. at the beginning, it sounds like he's scraping down from the top of the neck--definitely not what matt's playing.
2. notice where his hand's at at 2:30--definitely not the riff you hear
3. you can hear a second guitar doing a bend at 2:36--probably what matt's actually playing.
then there's this video: http://www.youtube.com/watch?v=B8Ja3F57wfg. sounds like everything's right in that one. and the falsetto he does for bliss in it isn't the same as the other videos of bliss from live 8, including the clip in takeabow19's bliss falsetto compilation it's still good, though edit: nvm, actually watched the video and some parts like 5:04 look off. maybe the audio quality