Ags if you got a good switch whip it out boom and it's more accurate. Athigher levels when people have higher defence because what I tend to see is ehrn proplr whip the claws out at me barely hit but as for low lvs claws would be better.
I find claws more reliable due to its increased accuracy, however AGS can be used as a smacking weapon as well as spec and its also way more classy to KO someone with AGS than claws.
Although hitting 600+ with AGS for a KO is pretty darn cool, I think Claws have much more accuracy and the chance of dealing out 600+ damage is MUCH, much higher with claws.
I have clawed guys out from full HP a number of times, when their HP is around the 800-900 range. It depends how luck you get, obviously, but claws just seem to have a much better chance of dealing out a large amount of damage in a short amount of time.
Plus, for the cheap price compared to an AGS, I think Claws are definitely the preferred spec weapon
claw don't really k0, there is a time delay for its specs, the only time claws really does k0 if you catch them at low hp off guard, ags is the best choice if there mid-range hp and you want a 1bang. but then it all turns to how lucky you get. but AGS imho. i have never been spec'd out by claws.