Originally Posted by Excelsior.
That's because Bane >>> bricks.
Fact. Bane punched through a pillar at city hall without bloodying his knuckles. Or, possibly, Talia slipped it off during coitus. Can you imagine how bad it'd hurt if Bruce accidentally kicked her while they were knocking boots?
@Rainmaker: I also think Bruce was going for Bane's head in the first fight, given that the skin is so exposed.