I was shaking my head at the listing of Cobain as well. When the title is on "greatest guitar players" I try to break it down to just that rather than the sum of it's parts. If you take Cobain's music as its sum, its much, much, much greater than anything he did with his ability, influence and technique on guitar.

I also think that is why you don't see guys like Vai and Satriani on the list because they were not great songwriters or rather the sum of their music was not as great as their single ability of playing guitar.

Which is a shame. And to no surprise one of my favorite guitar albums of the early 90's, the guitarist was taught by Satriani. That's influence!

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne