First, the most accurate way to compare serrations on knives with different grinds is on the "back" (generally right) side of the blades. Not saying that's the case here, but serrations on hollow grinds tend to look less aggressive than those on flat saber grinds even if the actual notches are the same depth when viewed from behind. On the other hand, yes, some models have more aggressive serrations than others. Also, since serrations are cut with a specially shaped wheel which gets dressed at intervals, a blade ground just after the stone is dressed will have somewhat more aggressive serrations than one of the same exact model ground just before it was dressed.