Generally the heavier your arrows get, the more efficient they’ll be at absorbing energy from the bow.
If you’re taller than 5’7, and your bow is newer than about 2005, your bow and pretty much any arrow you choose is going to be sufficient to kill any big game reliably.
The difference in those two arrows from an “energy transfer” standpoint isn’t material.
The difference in speed could be, depending on your shooter and what he’s shooting and at what distances.
I take the extra speed if the bow is tuned, the arrows are square, and he’s shooting very sharp heads. I take the extra weight is his arrows are hitting animals sideways. But really, splitting hairs.
As far as stainless half outs go - I’ve killed the last 20-25 animals (whitetail hog elk mule deer - mostly whitetail) with rip tko 300 with 100gr SS half out and 125gr cut in contact head. I’ve made two holes every time. I’ve had zero insert failures. Probably a half dozen wound/misses in there where I encountered a leg bone and or rocks. Same no insert failures.
I have broken quite a few arrows though. Comes with the territory when shooting 530gr arrows 290fps. No bent inserts or broken arrows around the inserts. Most commonly they’re sheared by animals running I assume, but some I’ve heard/watched break.
