The biggest revelation in baseball Tuesday wasn’t that Major League Baseball sports betting deal with MGM — that was only a matter of time since the Supreme Court decision to legalize sports betting. The biggest revelation in baseball came during the announcement of the MLB-MGM deal and it was this: Pace-of-play isn’t that bad after all. Yes, you read that right. Baseball’s slow pace is being propped up as a good thing after years of hearing about how it’s ruining baseball and years of developing new rules aimed at fixing it. It goes to show, when sports gambling becomes legal,…