This. Plus, f1 being a high creates its own mixup, as people begin trying to duck poke him out of it, allowing him to go for b2/f3 as a starter.
Also, one of the best crossup j2's in the game.
Also, the best chip in the game.
Also, a ton of extraneous tools/gimmicks such as quickstand off of df1 that leaves him in optimal f1 range and bombs.
He's not broke, but is about as good as you can be without being broken.