Achillobator seems really bad as a raptor?

I've rolled an Achillobator, Deino, and now working on a Laten. I feel the Deino is a lot more fun than the Achillo, and the Laten has many of same bleed tactics in a more agile package. What exactly is the point of the Achillo and how do you play one successfully? I am struggling to enjoy it compared to the Deino and Laten