As much as I like Rafferty, having seen the Run For The Money pilot tape, I thought he came off rather weak. The game is so question-heavy, he didn't have time to relax and ad-lib. Kept repeating cliches trying to keep the game moving. It would have worn thin pretty fast. The other formats allowed for more comic reaction or snarkiness as he played off the material or the contestants. Maybe there just weren't that many games where he would have been a good fit. Feud host? I could see that.