"But" nothing. 2021 actually happened. There is nothing to speculate about in regards to 2021. Are you just making up scenarios now where a free year was given to 2020 seniors for 2021? Hall is a wash if that's what you're implying, because if he's in the lineup Starocci isn't.
Essentially it comes down to if you think Cenzo/Rasheed/Verkleeren in 2020 could outscore Kerkvliet/Beard/Berge/Howard in 2021 by 16 (assuming PSU still wins at 133, 141, and 174 and Lee is Iowa's only champ). Highly doubtful, unless you start getting into scenarios like Lee pulling a 2023.