Thing is, those "pollsters" must be young or didn't look very far back. I would add Jorma, Harvey Mandell, Terry Kath, Glen Campbell, Al Kooper, etc. Way ahead of Brian May.
I have heard of all of them... I think, but c'mon... Robert Fripp, Frank Zappa, Steve Howe, Al Dimeola, Jimmy Page, Clapton, Duane Allman... that poll is just what I mentioned, for a laugh.
Wait. How could you you not have seen this one... only known recorded concert to date of the mostly original Traffic (no Dave Mason). He rips it up pretty good on this film, 1974... my avatar lol. Stoned out pretty good too, acid is fun.
Not sure what world the guitar world pollsters live in but it must be a small, tiny one.
https://www.guitarworld.com/news/brian-may-nudges-out-jimi-hendrix-to-top-total-guitar-greatest-rock-guitarist-of-all-time-poll
You know, a guy like this is a perfect example of finding a job/profession you LOVE and make money at. He could have retired whenever he wanted to but kept going till almost 100 years old. Whippersnappers take note lol...
I had no idea that he was still alive much less working... one hell of a run from one of the greats.
https://insidepulse.com/2020/06/07/legendary-cartoonist-retires-after-73-years-56-years-of-which-at-mad-magazine-at-99-years-old-al-jaffee-calls-it-a-career-after-pioneering-mads-fold-in-fold-out-art/?fbclid=IwAR2mLEes5Ei3NKDA1j6gnNKKMExw_NZgWbPJikdqWi92WIUAkedQii4PKHU