>>19544139Because Doubles gives useful access to Protect, one of the most skill-intensive moves in Pokemon. With good prediction, a good player with a shit team can beat a bad player with a better team by using Protect. Even if fucked temporarily by luck, the more skilled player who is behind can come back using Protect.
Because Doubles has a wider range of moves, some of them being specifically designed for Doubles. Heat Wave is an option alongside Flamethrower/Fire Blast/Overheat. Sky Drop is a game-changer. Tailwind is usable, as are Wide and Quick Guard.
Perhaps you're referring to the range of available pokemon in VGC? It's the one and only occasion where Nintendo is not moneygrubbing. Because the tournaments are restricted to Kalosmons only, all I needed to play at a national level was my copy of Y, despite not having played previous generations. Because legendaries that aren't shit are banned, people are encouraged to breed with the improved and easy breeding mechanics rather than spend their time soft resetting or RNGing.
Honestly, the format is fucking excellent, and it's the only thing that makes me bother with a game that's otherwise just "pretty good".