Houndoum

Crunch is not faster. It's 3.2 seconds versus a flat 2 seconds.

My guess on the rating is that crunch is so slow that it gets you beat up plus you are waiting to cast while the other move is letting you make quick move damage.

But I don't know.

What's a Houndoum?

I did a hand calculation on this. The result is that the damage snarl does in the extra three seconds you are waiting for crunches to resolve, somewhat more than compensates for the additional 70 damage for the third crunch bar. Also, foul play's 2 second resolution time makes it better for dodging.

BTW, I would really like to have a snarl/foul play tyranitar. I know it doesn't exist, now, but I'd like to have one.