I think there’s more you can get away with defensively at the 4 simply because there aren’t that many freak PFs (if by this, you mean big and physical) in the NBA right now. I think, most times, just having a body there to stop players is somewhat enough defensively as a 4. On the other hand, if a player is assigned to defend quick, perimeter players then the defense completely breaks down and the Center is more likely to get into foul trouble.
so while the bar is low for a 4 to be good defensively, the upside is extremely high. I think that’s why they drafted Sochan to begin with; if he works out for us, the team defense would be extremely good. I can’t think of many elite defensive 4’s in the NBA right now— only guards, wings, and centers. I think it’s an untapped area ever since the NBA changed into what it is now. The NBA hasn’t seen the perfect defensive 4 who can literally guard 2-5 and provide elite help defense. When that day comes (hopefully it’s Sochan), it’s going to be game-changing.