Guitarist rankings

I created my own guitarist ranking system. I chose 30 guitarists that are often listed on guitarist rankings (Rolling Stone, etc.). I tried to be as objective as I could, but no rankings are actually objective. Many of the guitarists on this list are what I would consider mediocre or even poor guitarists (i.e. Keith Richards, James Hetfield, Prince and Kurt Cobain), but I still put them on the list because some people think they are good, and they were/are popular.

My methodology included five categories: virtuosity, precision, pioneering, quality, and popularity. I rated each guitarist in each category from one to ten (ten being the best). I gave some categories more weight than others (100% for virtuosity and quality; 90% for precision; 60% for pioneering, and 30% for popularity). Then, I added the totals. Here's what I came up with in descending order of "greatness."

1) David Gilmour
2) Steve Vai
3) Eric Clapton
4) Stevie Ray Vaughn
5) Jimi Hendrix
6) Eddie VanHalen
7) Robert Fripp
8) Joe Satriani
9) John McLaughlin
10) Chuck Berry
11) Brian May
12) Jimmy Page
13) Duane Allman
14) Carlos Santana
15) Jeff Beck
16) Alex Lifeson
17) Eric Johnson
18) Adrian Belew
19) Frank Zappa
20) BB King
21) Billy Corgan
22) Pete Townsend
23) Kurt Cobain
24) Slash
25) Joe Perry
26) James Hetfield
27) Bo Didley
28) Robert Johnson
29) Keith Richards
30) Prince

I was surprised by some of the rankings. My system was more objective than I anticipated because a few of my favorite guitarists were not in the top ten (i.e. Jimmy Page, Brian May and Frank Zappa). At least Keith Richards and Prince received their proper spot in this order.