Given that I generally make profiles for relatively small and regular sized animals, I feel the need to butt in. I'm inclined to say this isn't quite right, but you're on to something. If they can take running at full speed, then by no means should their durability be wrong. AP is a different story, though, and definitely dependent on the animal's hunting style/standard tactics.
For example, I've made a lot of fish profiles. Generally, big (again, a relative word. Big, but not enormous like a whale shark), fast fish like the
Wahoo or the
Yellowfin Tuna hit Wall level because of their size and mass alone, and when you factor in the fact that they're doing this through water instead of air, it's hard to see why that could be wrong. Furthermore, a lot of fish do hunt through going at maximum speed and trying to surprise their prey. I'll add that it's pretty much impossible to hit 9-A with a Real World KE calc, though, even for prehistoric creatures, but it is pretty damn easy to hit 9-C as long as you're not incredibly tiny or incredibly slow (For example,
Greenland sharks were almost 10-A until I managed to find a source for a higher speed value).
I think people overestimate how many joules it takes to hit Street level; it's only 300. To get past 10-C? 40. It's a much smaller gap between Tiers 10 and 9 than it is for higher tiers.
I use KE because physics can't be wrong in real life, and that makes it pretty reliable. Maybe providing two KE calcs (one for cruising/walking speed, one for maximum speed) would be the way to go?
If anyone knows of a good way to get AP from bite force in Newtons, that would help a lot, too, and maybe even eliminate the need for KE calcs on some pages.
