Ultimate Marvel vs Capcom 3 General

How're people liking Iron Fist so far? I'm terrible at making combos, but the ones I'm messing around with can tear some pomegranate up, provided I get a decent hit and don't have a seizure in the middle of it.

Pretty much instantly kills any average/ low health character off one hit.

My brother uses Iron Fist and that^ pretty much describes him. The only problem I see with Iron Fist is that you are constantly on the offensive, so it leaves you open to counter moves like Taskmaster/Wesker's counter or Vergil/Wesker's teleports. In Iron Fist's defense, my brother doesn't do well against counters/teleports.