IMO, this board is over-reacting to Sua-Filo and Williams both. Sua-Filo played slightly better than Williams--not a lot better. Further, it is only one game.
Sua-Filo looks stronger than Williams. Williams, IMO, has better feet. Williams will be better at pulling, at getting to the second level to seal LBers, and handling speed. There are plenty of incredibly strong Gs that don't do those things very well at all.
Power is nice, so is speed. It's hard to find both qualities in one player--there's only so many Zach Martins in the league.