Monreal went down easily, but then so does every other player in that position. It's not exclusive to him.

It would be given as a foul anywhere else on the pitch, so why not in the pelanty area?

Kompany was stupid enough to stick his leg out there, and that's down to the fact that he's a bit stupid, not that Monreal is a "cheat".

Definite penalty if you're going on consistency of refereeing decisions.