Well fans apparently hated it in the game, I didn't think he was that bad. Those it is odd that his "brothers" are all over the place.
Anyway he's main ability is speed, but since most character don't move that slow, it's not a big advantage.
But I won a few matches with him online. Though maybe at less than a 50% rate.
I didn't use him much but he was far from my most hated tennis player.