I honestly don't know what it'll mean in the grand scheme of things. The offense should function relatively the same. Guiton can do everything Miller can, just not to the same level, but he is close. Most OSU fans would not worry too much if Guiton ended up playing, but if he got hurt, then there is a massive question mark when it comes to Cardale Jones (Redshirt FR) and JT Barret (True FR).
Now Meyer is saying game-time decision for Miller.