I beat it with around 50k using wind main, mei, sage naruto and jigokudo. (That team is currently 53k power, but I beat it when the cap was first raised, so was lower powered naturally)
The point being let the sage clone eat the chase cc, use mei's mystery, which means only a poison is reflected, to heavily damage, burn(stop choza regen) and lead into a chase that cc them, sage naruto for more dmg, then dance and repeat.
w/o mei, water main can do similar thing with poison tai--have weak debuff reflected while having strong cc *.
But the short answer is, weak debuff to soak reflect, then cc and ignition. The enemy team is too strong to brute force down, you have to grind it down while mitigating damage you take yourself.

It's too long ago and now I have too much extra power for it to be accurate. But like I said, I used mei, sage naruto, wind main and jigokudo (that's the move order), my talent is 34114 rhino. I wrote down my mystery tactics, thou I can't remember my placements.