Wait… What? You are trying to decide between a Greatsword or Axe/Axe?
On my warrior i use Greatsword and Sword/Axe, together. I charge in with GS (5) then (2) then charge out with (3), then imidiately switch to S/A and jump back with (2), the cripple, then (F1), then (5) axe whirl. If somehow the target is still alive i switch back to GS and start again.
You need to start weapon switching constantly.