You have to look at it all relative to the offense gained. Boozer/Okur were among the worse defending big men in the NBA and still good enough to get to the WCF along with many 50+ win seasons because, along with Deron, they were a great offensive machine. If Kanter can develop a three point shot close to Okur, and be better in every other area, safe to say Randle can could match Boozer's production, it could work out very well. Obviously filling Deron's talent would be done by committee, but whatever piece netted from Favors would be able to narrow that gap.