Did you even read the post?? These are the people who got the most votes by GTU'ers. If you didn't list your top 5, tough shit, but you can't complain !
My vote: Slash
This poll is useless then. If your trying to put up an officall greatest guitar poll then do it by skill leval and technicall ability. Not by people opionions and which guitar player was mentioned the most. The poll is more like the best most mentioned guitar poll.
The definition of "greatest" varies from person to person. You think it's the one with the most technical abilites, I think it's the one who can come up with cool riffs/licks and put his heart into it.
Like khammett said, very few of the people on that list could be compared to Becker in technical ability, but I still think Slash is a better guitarist.
Skill means nothing if you can't make something that sounds interesting.
It's not the "most mentioned", it's the poll that will decide what guitarist is the most liked on GTU.