He was pretty lenient on the night too, in our favour on a couple of occasions.
I'm convinced it's a perception issue. Arsenal do stupid things on the pitch and get silly red cards so any chance they get to reinforce that view, they take it. 'look at this fucker committing two fouls within seconds, I could give him two yellows for that, in fact that's what I'll do'.
Technicalities aside, they should ask themselves whether they need to give a red card, not whether they can.