@bbninjas Thank You.
The places where I've seen fighting fury belt have worked are on EX pokemon that don't have the OHKO power. Oh-ho Ex, Palkia EX, Manetric EX, and Gangar EX. Their the pokemon that just sort say, "Logistically, I can't knock you out, but I can get you the next round." Because other pokemon like Yveltal EX, Lugia EX, Glallie Ex, Chizard EX pumkaboo, and joltik really do have knockout power with the muscle band at 170dmg + it limits their power, or forces them to put more combinations into play to get it (hypnotixic laser, Virbank, Reverse Valley...) It's just to easy to attach muscle band and be done with it.