Your link has a misleading title. It says "debatable penalty" in the title, when we all know that it was clearly a dive by Valencia. Johnson didn't touch him at all.
Does United gets calls a good bit? Yes.
Does United dive? Yes.
Was this 100%, no doubt, absolutely not a penalty? No. It was debatable, meaning you can debate it from both sides.
This post was edited on 9/23 at 7:34 pm