Kung fu.

Whats going on with my team, I mean Kung fu comp is a viable comp right? (for 2s bleh can't help it, can't get a good shaman for 3s) but my friend and I found it far more dificult to get along than when he was playing fury warrior (I MEAN REALLY 2 WARRIORs > KUNG FU?) he complains about me fighting behind boxes, but they will just heal to full health if I retreat... what do you guys do in dalaran arena when their healers hide behind the boxes? its our main problem right now :(

EDIT: the problem is when both enemies hide behind the boxes