I'm not 100% sure, but I think the before and after graphs also included moving the subwoofer from a corner to the side wall.

Again, suckout at crossover can often be fixed with the phase switch -- that's why it's there.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8