Originally Posted by Fat Drow
a shallow movepool,
Ninetales actually doesn't have such a shallow movepool, it lacks decent offensive options, but it's a rather mediocre offensive pokemon anyways.
And regarding Scarftales, its surprise factor is obviously its biggest strength, but being rather unpredictable is a huge advantage as far as Scarfers go.
Edit: Actually I didn't know 'Tales learned Foul Play, that's not half bad.