So now power lifting protocols are optimal for mass gains? I thought the rep range didn't matter?
Because you don't understand powerlifting "protocols" I will explain. Rep ranges, fr hypertrophy, don't matter. Eat and train, and you will grow. So, in theory, you could train every single lift to a 1RM and grow. We know this is untrue in practice because the CNS will refuse to bear such a load for such a time. Powerlifting "protocol" is simple. You train the big 3 lifts, through varieites of the lifts, to always keep the CNS from adapting. But the CNS is only part of it. You'll see from the Hypertrophy Formula that your body cannot lift a weight that it simply cannot lift. Though the CNS creates barriers, physical ability does as well.
But we've established that the CNS cannot handle an entire session in the 90-100% intensity range.So powerlifters are constantly changing up their intensity levels throughout a training session. Once the main work is done, anything is fair game. 8 sets of 3, 4 sets of 6, 3 set of 15, 2 sets of 20, whatever! Are these optimal for strength gain? Of course not. Prilepin's Table dictates very accurately what is "optimal" for strength training. But the Hypertrophy Formula also states very accurately what is required to achieve hypertrophy. In a very simple wording, you simply need to lift enough tension for enough time, but the amount of tension must be minimally stimulating.
I don't know where you got the idea I thought everyone should stick to one rep range all the time. If you have ever taken a look into my journal, you'll realize I'm changing up rep ranges all the time.
Here are some fundamental differences between what I do and what P/RR/S does (and everyone will please remember I've never knocked P/RR/S, I simply differ on ideas and generally differ on everything with its creator

):
P/RR/S is a periodized program, based on 2 week cycles. (P cycle, RR cycle, S cycle).
Westside is a periodized program, based on daily cycles. (every session includes power work, every session includes rep range work, shock work isn't very common but then GoPro doesn't recommend doing it all the time either).
P/RR/S peaks in the 4-6 rep range. (correct me if I'm wrong) This range falls into the 70% intensity level. It spends RR time in the 60% rep range. Enough to stimulate hypertrophy in most lifters, but not a solid intensity level for strength training.
Westside peaks at 1RM. (100% intensity) Accessory work ranges from 60% to 100%. Enough to stimulate hypertrophy (across the intensity levels) but also enough (at 70% or higher) to stimulate strength gains.
I think I once mentioned this before, but let's have some guinea pigs step forward. Maybe 4 people. 2 guys, 2 gals. Here are the 2 criteria for this test. You have to take pictures before, in the middle and after. You also have to test your 1RM on the big 3 before, in the middle and after. We can even potentially do this twice to reverse the order.
Test 1RMs and take before pics.
Do 6 week run of P/RR/S.
Test 1RMs and take during pics.
Do 6 week run of Westside.
Test 1RMs and take after pics.
-optionally, though I hope we can get a guinea pig for 6 months-
Take 1 week off.
Do 6 week run of Westside.
Test 1RMs and take during pics.
Do 6 week run of P/RR/S.
test 1RMs and take after pics.
This wouldn't be to discredit anything. This would simply show 2 things. What is best for strength gains, and what is best for hypertrophy. Perhaps hypertrophy will develop equally. perhaps strength will. But this would be one shot for the entire forum to see. But we'd need a guinea pig.