Yes, I'm certain it's very different for a lot of guys. Like in baseball, some guys tear up AAA but can't hit a major league curve ball.
I assume one big reason that the games are so different for some players is the level of competition they're used to playing against. So I looked at state and national rankings for the high schools for selected Duke players' senior seasons. The theory being that to be state champion you have to excel against the best high school teams and players in your state and to be nationally ranked you similarly have to play and excel against the best high school teams and players in the nation.
Here are the numbers (per MaxPreps):
Player | high school | Yr | state | state rank | nat'l rank |
Cooper Flagg | Montverde Academy | 2024 | FL | 1 | 1 |
Boozer brothers | Christopher Columbus | 2025 | FL | 1 | 1 |
Nik Khamenia | Harvard Westlake | 2025 | CA | 2 | 3 |
Kon Knueppel | Wisconsin Lutheran | 2024 | WI | 1 | 6 |
Taylor King | Mater Dei | 2007 | CA | 3 | 9 |
Isaiah Evans | North Mecklenburg | 2024 | NC | 1 | 14 |
Andre Dawkins | Atlantic Shores Christian | 2009 | VA | 9 | 449 |
Joey Baker | Trinity Christian | 2014 | NC | 12 | 486 |
Looking at the above, it makes sense that Joey Baker and Andre Dawkins might possibly have had potential issues adjusting to the better competition in college (though both had the additional burden of coming to Duke a year early and Andre had even more major issues through no fault of his own). Taylor King seems to be another story, though as others have mentioned, he had some off-court issues too.
Obviously this isn't the be-all, end-all but looking at the above, I'd expect Isaiah Evans, as the best player on a state champion and top 15 team nationally, would be less likely to have trouble adjusting to the higher level than, e.g., Baker and Dawkins.
Though of course, as I said in an earlier post, at this point there's no real way for us to tell for sure.