What is the ratio of gender in battle spots of Pokemon ORAS?

I have a Haxorus who has the ability, Rivalry(Raises Attack if the foe is of the same gender), so I wonder which gender is more suitable in ORAS batttle spots and competitive battles.

After going though battle in free, I have seen a lot of male Pokemons. However for breeding purposes, I think that females are more useful, so maybe more females will appear in the future. I need an answer for overall gender ratios in battle spots and suggestion for future preparation.

Thank you, my Pokemon Comrades.

I can tell you that not a single person cares about gender for battles, and as such it's completely random, keeping in mind that Pokémon can have gender ratios that are not 1:1.

I don't see why you would willingly use Rivalry when Haxorus can have Mold Breaker.