...one player needing to be tightly guarded because he might dunk. That latter scenario still leaves 4 other defenders on the 4 other offensive players, no added benefit there.

Fouss' dominance in the low post forced teams to have to rotate help defense bringing in extra guys which then opened up shooters on the perimeter and also opened up opportunities for backdoor cuts for teammates. Fouss just needs to get quicker at recognizing the double before it gets to him and move the ball out of trouble. I think having Aly for a season helped improve his court vision a little last season but he still needs to work on it.