Tough guy, the epitome of a certain kind of Marine First Sergeant (the Brit equivalent of a company Sergeant Major I think).
My Army company spent almost a year attached to a Marine division in Iraq. From that experience I'd definitely say the USMC's real strength lies in their infantry companies. They've got no hesitation in throwing infantry in at the drop of a hat with minimal support while the Army tends to 'prep' the battlefield more. At battalion (BN) and below they're excellent--very good BN commanders who understood 'hearts and minds' better on average than the Army, regiment and above they're not as good. Compared to the Army they were poor logistically but improved as time went on, planning methodology isn't so great, light on artillery and no decent equivalent to Bradleys.
But they built up a mythology about themselves that they believe and it serves them well.
Worse: Since it happened in Fallujah, some military bashing journo is probably going to start telling tales about him slotting a bunch of women and kids during the fight, and the gutless politicians won't defend him!