Better (greater edge) on-line than in B&M???

[Optisizer]

A high-stakes NL holdem player I know of claims to be better online than playing live.
Given that live play is generally considered softer by most players, attracting more fishes etc., how can it be that a player can make more per hands played (or thinks he does) online than in a B&M?

Generally speaking what would your style of (winning) play have to be for that to happen? Would these style preferences differ between levels?

What have you likely not figured out about your play if you're better (making more money per hand) online than B&M (and vice versa for that matter)?

I know I am better B&M than online, so if I can understand this player, maybe it will help me become yet a tad better online...

(This player does have a style of play that can be defined quite easily on the L-T, P-A scales, but I won't include it here, so as not to put any preconseived notions in your head if you feel for pondering it. Besides, knowing the style still doesn't bring me any closer to a plausible explanation including valid reasons.)