>>23130013Hard counter would imply that M-Gallade can switch right into M-Kanga at a worst case scenario and take it out with no issue, Kanga's return demolishes it if its the common set.
252 Atk Parental Bond Mega Kangaskhan Return vs. 4 HP / 0 Def Mega Gallade: 253-301 (91 - 108.2%) -- 50% chance to OHKO
Even if it were to live, sucker punch is a thing for priority. In a one vs one situation, M-Gallade would come out on top since fake out is basically just like a quick attack to it cause of inner Focus, sucker punch does a bit more thanks to higher base power and Return wouldn't go first since Gallade could easily outspeed. Its a good check, not a hard counter. Learn the difference, it can literally save you in a game.