DeSantis will have a helluva hard time bringing the Trumpies to the polls. Trump brought out lots of people who usually don't vote, which is why the polls were so off about him.
DeSantis appears to have been in an accident at some point and has had his charisma removed. He will not whip up the same numbers that Trump did.
I would be very happy if he beat Trump in the primaries, for many reasons.
But he won't.