Just want to say two things about the azure fang teams:

1) Against world boss in general you don't use Water Style - Flowing Whip, but Taijutsu Attack for the simple reason that owns an high critical chance and its basic damage is higher due to the fact the chance to start the low float combo is lower. (a slightly higher basic damage AND +15% critical chance).

2) Haku team currently is WORSE than wb asuma, tenten gnw, iruka, azure fang team.

Haku doesn't give anything more than wb asuma, but conversly, during round 1 and round 4, haku doesn't hit with his standard attack and never uses his mystery in this rotation (while, instead, asuma uses it in round 4).

So the comparison is between 2 haku standard attacks vs 4 wb asuma standard attacks + 1 asuma mystery +1 iruka mystery (since with wb asuma in haku place you c*e iruka both in round 1 and 4, instead that only in round 2) considering a globally equal damage boost (slightly lower for tenten and water main but way higher for iruka that hits every round with his chase) and the fact that iruka boosts asuma while doesnt' boost haku the result is, indeed, in favour of wb asuma in comparison with haku.

low level f2p simply don't own asuma wind blade so the problem is not there :-)

yep, when they'll make them available with a 3 rounds cd, indeed.