Well that one's wrong. John Taylor isn't even on the list but we're been told that he's absolutely definitely the best bassist ever in the history of music.
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