pretty clear he has gotten more out of the same players and used the same players in better ways than Rose did, so we do have a direct comparison at least with the tail end of Rose's coaching career.
Better passing, better defense-less wide open threes for other teams, smarter more open shots resulting from faster crisper passing, which has correlated to better 3 point shooting percentage.

FWIW I'll always be a Dave Rose supporter, he helped solidify my BYU fandom forever, but right now I'm loving what Pope is doing despite the growing pains of Utah and Boise St.