Everyone thinks that most jazz musicians are super virtuosos at their instruments and are unbeatable and metal musicians are inferior. That's really lack of knowledge.
The most virtuos musicians that I've heard are either in Dream Theater, Pain of Salvation or Opeth. I've never heard a jazz musician do what the others can't.
Not to mention the lack of great jazz vocalists, we have Buckley, Gildenlöw or even (or especially?) Mariah Carey for that.
Jazz characteristics are improvisation, which requires having had a lot of musical theory and polyrhythmics.
Portnoy for example, has no idea what music needs, thus he is inferior to most jazz musicians. But take a look at Mournier or Lopez, they are frickin geniuses, able to play highly complex polyrhythms, they fuse several genres (especially Lopez) perfectly, they do know, what a song needs etc.
By the way: Johan Langell merely plays what D. Gildenlöw tells him to play. I'd say Gildenlöw is the better drummer.
My list:
1.Lopez
2.D. Gildenlöw
3.Mournier
4.Danny Carey
5.PTree dude (So called friend is ingenius)