Thank goodness, the “revenge factor” can be a genuine advantage. In his post-game interview moments after Iowa freed Floyd of Rosedale from unjust captivity via a 31-14 steamrolling of the Minnesota Gophers, star running back Kaleb Johnson admitted he took last season’s controversial loss “personal.” Public service announcement for future Iowa opponents: don’t tick off Kaleb Johnson. The current Doak Walker Award front-runner galloped and gashed for 206 yards and three touchdowns on only 21 carries. Iowa all but abandoned a serious passing game, understandable when you are rushing with impunit…