Moss set the bar for handballs when he penalised Jesus when the ball hit his upper chest, possibly simultaneously his upper arm. The penalty award was correct using this same criteria.Martin Keown used that one to justify his verdict that the penalty that was given was the wrong decision. He said that because the first one looked more of a penalty and the ref decided it wasn't, then the ref had "set the bar" on what was a penalty. Therefore no way could the second one be a penalty and VAR should have realised this and not given the penalty.
Bizarre logic suggesting one wrong decision on a penalty means all subsequent decisions should be wrong too.
The earlier penalty call potentially hit the upper arm at the part covered by the short sleeve. This isn't a penalty. But the only person I've heard refer to this part of the law is Dermot Gallagher. None of the pundits have mentioned this, so their opinions are pretty irrelevant really.
The bar for cautions was set when Moss issued soft cards against two City players. Moss isn't a very good referee, but at least he was consistent in sticking to his own standards.