Depends on your draw length and point weight Jack--I shoot 66#@30.5, and with 125 grain points my arrows average around 9.5 grains per lb. (620-640 grains). No problems shooting through deer, hogs, rabbits, armidillos, etc. so far. Hope to do another "test" on a hog or three this weekend.
POC isn't as durable as ash, but as my favorite bowyer says, everything is a trade-off. Trying to get (and keep) ash shafts straight drove me nuts. Most of the shots I make that break an arrow would break most any arrow (including carbon--been there, done that). Again though, ash shafts are tougher in general.
I think your last statement is dead-on! lol
Chad