Keep in mind the bottom tier of the AL is probably the worst it has ever been. Every top tier team probably won a good 5-10 games more than they would in a more normal year. Except the Yankees didn't really win that many more against the Royals, Twins, Orioles, and the Blue Jays. They went 35-17 against them which should be within what you would expect a .673 winning percentage is good but not anything abnormal.