Your opponent was absolutely horrible. I'm watching the battle on Wi-Fi, and ALL of their Pokémon are in Ultra, Great, Timer, etc. Balls (it looks like they just randomly caught them, taught them some TM's and brought them to Wi-Fi without EV'ing at all) - at least your Pokémon were in Poké Balls.. Anyway, the opponent was horrible as they only knew what their Pokémon's moves did (so they knew to use slow Pokés), and nothing else.
Not much else to say. It's very easy to beat people like that.