If Ted Cruz won state X so can DeSantis.
But whatabout the states Cruz lost?
This feels like weird logic; much of Cruz's base has gone over to Trump in polling.
(The commonality between their strategy will remain that Trump does poorly with the most informed and enthusiastic voters, so he will invariably underperform in caucuses. These voters broke for Cruz in 2016 and are quite winnable for DeSantis, but there probably isn't going to be a general one-to-one translation where everybody who voted Cruz automatically backs DeSantis this time around.)