He wasn't a great guitar player (Cobain)! He just revolutionized music, that's all. As far as the best? That's a list that includes ppl we've probably never heard of.
Ever hear of Eric Johnson? He makes Jimmy Page look like a piker.
If the intro gets boring, skip to the 3 minute mark. This guy is unreal.
Or Tom Morello from Rage?
The guitar is a toy in his hands, check out his solos compared to Bruce's. This performance had die hard guitar enthusiasts scratching their heads in amazement.
What about Eddie Van Halen?
Page was fine, in my opinion, but when you can bend a guitar to your will, like the examples above, you're on another level. The list goes on and on...