I know Mario Duplantier and Brann Dailor have both spent a lot of time learning to play jazz drums in order to become better metal drummers.
Metal drummers have really been raising their standards in recent years. Danny Carey used to be in a whole different world to anyone else in metal but I think there's a few on his level now.
I sometimes visit their part of the stage to point and laugh at their girly little 100w amps and silly, weak, thin strings and steal their picks and beers
Both of them would have to be above John Taylor using your logic because they've both sold more records. I think John Entwistle might have sold more as well, hes over 100 million.
There is no best bassist. Best bassist is just too vague and too subjective.
To suggest anyone is the best and then think there can be no discussion or reasonable difference of opinion is just moronic.