>>38583807I mean Metagross aside most of them do suck dick, but ORAS megas were DESIGNED to be broken as fuck or at least be counters to existing staples.
Garchomp is objectively superior using any other item than a Mega, TTar is more debatable but its primary advantage to going mega is winning Weather Wars, because he can set sand and if you switch in CharY etc., he can mega evolve and re-set sand.
>>38584751The strongest megas in the game bar Fug went to Pokemon with horrific BSTs.
Mawile, Sableye, Kangaskhan, etc