I've just finished a wifi battle with a trainer from Japan. His Mamoswine, Frost Rotom, and Abamasnow were faster than my Jolteon, Serperior, and Archeops. They were EV trained and bread to have outstanding speed. These poke'mon were faster than mine and I'm completely dumbfounded as to how this is possible. Can someone shed some light on this.
These are their stats capped at lvl 50.
Only one way this can happen:
In Mamoswine and Abomasnow's case, they could have used Ice Shard, which is a priority move.