Sure he's good, but definitely not the greatest...His style is similar to Herman Li.
Also, Cannibal Corpse is fast and all, but a lot of death metal is similar. Try Slayer for example, just as intense as Cannibal Corpse. Also, Lamb Of God is still simplistic in terms of bass.
In my books, guitarists are like this:
Steve Vai, Joe Satriani, John Petrucci, Ywngie Malmsteen, Steve Ray Vaughan, Jimi Hendrix, Herman Li, Dimebag Darrel, Synyster Gates, Kerry King.
But then, slayer isn't even close to Death Metal. It's Thrash Metalstill a good band though.

