Aye that's because 2handers are shock units. They are used for the charge, not for the fight afterwards. You try swinging around a 1,5 m (5 foot) sword when you have your friends no more then 1 meters away from you.

HRE is pretty good, but you need to use the units wisely ... I can't do that, which makes sure I suck with them, but others can ... and I lost more then once to them.