Apples and oranges. Fran had a complete and total rebuild that he walked into. He took over a program who hadn't gone to the NCAA tournament in the previous 4 years and took over for a coach who burned the program to the ground. It took him a bit, but he has put NCAA tournament quality teams on the floor 5 of the last 7 years.
Prohm took over for a program than had been to NCAA the last 4 years and a roster that was ranked pre season #7. He took that program and has turned it into a program that just hopes to not miss the last 3 of 4 NCAA tournaments.
There is no question Fran has done a better job with what he inherited than what Prohm has done.