Predator's Stance damage not transfer to ambushes

I may be wrong, but when I a normal ambush with predators stance (hands) as a felar, I get less damage than what my hands normally do. Please see log below. It seems the bonus of Predators Stance is not transferred to the ambush. ield <96%hp 27%m 99%mv 1055tnl (91.80%)> ambush man You step out from your cover. Your surprise attack MASSACRES a human settler! A human settler has a few scratches. field <96%hp 27%m 99%mv 1055tnl (91.80%)> You dodge a human settler's charge. You dodge a human settler's charge. Your claw MANGLES a human settler! Your claw MANGLES a human settler! A human settler quickly leaps away from your claw. A human settler has some small but disgusting cuts.