I always thought claws would be better. Better spec, and you can do back to back specs very, very fast. By comarpison, you hit one spec with AGS, and even if they were half asleep they would probably have time to food combo. Problem with claws is the phoenix necklace. Put one on and it's almost impossible to die unless you're already at low hp. I actually let people spec me out with claws if i have a neck on and I rarely have to eat, I get an extra hit in and if they're risking it for the ko they usually get killed. With an AGS you also don't have to rely on the special attack as it has fairly high hits without the spec. AGS>claws for pking.