>>35982049Base power = higher damage regardless of stats.
252+ Atk Gale Wings Talonflame Brave Bird vs. 0 HP / 4 Def Charizard-Mega-Y: 192-226 (64.6 - 76%) -- guaranteed 2HKO
This is hitting with base 81 attack talonflame also had the advantage of running adamant due to its broken ability.
252 SpA Charizard-Mega-Y Air Slash vs. 0 HP / 0 SpD Talonflame: 193-228 (64.9 - 76.7%) -- guaranteed 2HKO
This is off a base 159 sp.atk and is also hitting on the weaker defensive side.
You are an idiot if you think that just because it has an 81 attack stat it isn't broken. If brave bird had a BP of 90-85 then it would have been slightly more balanced but priority healing on top of that is what made it unreasonably good.