If Rose's shot had gone in instead of being pushed onto the bar, there would have been people on here hailing Hart as our saviour and saying "thank God we didn't get Johnson in". FACT.
But it didn't go in, and it might seem like tough luck, but the truth is that we'll have shots which might have gone in but were inches off when we're winning games too. It's the same for every team, if we were creating enough goal scoring opportunities, with the front of goal ability to finish them, then the "might have been" chances wouldn't matter.
If we're down to the point of "that might have gone in on another day" then we're in trouble. Teams have them every game, winning or losing.