Advantage all non-monks / crusaders? Not really. It's a damaging skill. What's the difference? None really. Just because crusaders have a chance to cause a double KO that way, doesn't mean they will that often or they get some "unfair" advantage. I think it's the logical thing to do. And if a Monk wants to be smart about it- they'll wear the crusader down first, heal, and use a softer Asura so the kick-back won't obliterate them.
As for rematching, how do you know Wind? Did the GMs tell you?
I'm only guessing, they have the final say on this stuff and only they even know how the ladder will work.