Quoted By:
>Tyranitar exclusive to Y
>Aggron exclusive to X
>Tyranitarnite exclusive to X
>Aggronite exclusive to Y
So if I get Y then it will be much easier to trade for a Aron than Tyranitarnite which means that Mega Aggron is easier to get in Y and Mega Tyranitar is easier to get in X
My head hurts