re: Poker & [25nl 6max] QQ ... wa/wb situation, yes?
vs a 62/0 guy you can get away with leading out on this flop. it is such a drawy board, and the fact that villain will probably hold on to any 7/8 means you certainly can get called by worse. Besides, wa/wb doesn't work anywhere near so well when you are oop, because you are often turning your hand face up and asking to get owned (by a decent player tho so obviously vs this guy it isn't a problem).
Wa/wb is like when you have qq and the flop comes at3r or something. If you raise preflop, nobody is hanging on to a T in this case and there aren't anydraws, so you can basically only get action from an A or bluffs. By checking it back you let some hands bluff, whereas you aren't going to get somebody to bluff raise you on a board like that. So basically you lose value from bluffs, fold out hands you crush, and only get action from hands that have you crushed.
Btw, as played i think i fold this. Not really laying you a good price to bluff catch and loose passive guys don't tend to bluff all that much (snap call vs a maniac).