Check out this awesome video. It's one guy playing the Super Mario theme on two guitars simultaneously. Granted it's not 100% right, but this requires serious talent. http://i-am-bored.com/bored_link.cfm?link_id=15960
I say fake. Firstly, it's pretty hard to tap something out that fast, especially when multitasking two guitars. Then the bass notes, for some reason, doesn't seem in sync with either hand, it can't be his front guitar, as that seems to be melody, nor does it seem to be the closer (to him) guitar, as his fingers are moving too fast. Sorry to spoil the fun.
It must've been lagged for you because I watched it again and all the notes were in sync, from what I saw.
If that's real then wow! Pretty impressive. It doesn't really sound fake but it wasn't 100% perfect, especialy on the slides.
That was incredible. You could tell he messed some parts up (tapping is really fucking hard to do) but it was impressive nonetheless.
I'm pretty sure that was real, since he messed up a tiny tiny bit a few times, but still... wow. pretty impressive..