Some good thoughts, TFOX. If I may take up some space I'll give a little history
Back in my early days (mid 70's) I shot about 50-55# and aluminum arrows. That was before carbons. Bows only had about 20-25% letoff and I'm not a weight lifter. How much energy? Who knows and who cares. Pass through is a pass through.
As bows got more letoff I moved up to 65-67# and got pass throughs. Also had spine shots that didn't.
As I got older the weight started coming down to about 60#. Same results.
Now the last couple years I've suffered some severe muscle loss and can't even draw 50# effectively. Funny how I shoot 47# and 305 gr arrows and still get pass throughs. And with setups that I now know produce only 38-39# of energy.
So through it all I've learned something that I try to tell younger fellows with higher testosterone levels than myself. Poundage, kinetic energy, momentum, speed----they are only numbers. Most don't hear me. Testosterone blocks brain function and reduces common sense.