Who voted for that? Blathering announcer said Santander over Mountcastle, because poor Ryan didn't come up soon enough. On Monday, they'll be 1 game different. Mountcastle's OPS+ is 14 points higher. His batting average (which isn't part of that) is 72 points higher. Not sure how you parsed that.
All of which is irrelevant, because Iglesias smoked both of them in every metric except slugging, and he beat Mounty by 39 points in that. Plus playing shortstop. And he played more games than either of 'em. His OPS+ is 156. Gimoungus.