It's easy . . . Frank grinder ball using Frank's kind of recruits does not translate into many wins against Roy Williams and Coach K type teams. Yes, they'll be the occasional upset, but more times than not Frank will get thrashed by those guys.
If Frank wants to make 3rd place in the ACC his goal in life and regular NCAA tourney appearances than Miami is where he should go . . . and if several other ACC fanbases would just accept that, they'd be better off for it as well.