Maybe. Both Adams and Zion has said the other is stronger than them. Adams maybe has as much or more pure strength. But Zion plays a way stronger game. Mostly because he gets lower and is way more explosive than Adams

If you reverse roles the same thing happens.

Probably not. Adams is taller, lighter and not as explosive. Zion gets low and is one of the most explosive players in the NBA

Harden is very strong. But Zion is by far the strongest player in the NBA