Sean John President -- Sorry, Nets ... Knicks Own NYC When It Comes to Style

Carmelo Anthony's Knicks are crushing their crosstown NBA rivals ... in the closet, anyway -- according to one of NYC's biggest names in fashion.

The Brooklyn Nets made the playoffs last season, while the Knicks were sitting at home -- but Sean John President Jeff Tweedy explained why 'Melo still leads his team to dominance on the NY fashion scene.

Cheer up Nets, at least you still have hip hop legend Jay Z as an owner. Oh, right.

Well ... your black unis are very slimming.