He's good, but I wouldn't go as far as calling him a guitar genius. Plus, pretty much anyone can cover a song, a bit harder to actually write it. Don't want to sound too critical about the guy though, plays good, but if you really want to see some guitar magic, check out the likes of Yngwie Malmsteen for example.
Watch some of his other videos, I think youll change your mind
P.S malmsteens music is beyond horrible, as is Steve vais