You're being biased. Both should complain about the ref. He might've dived to get the penalty but that's irrelevant because he was clearly obstructed. It doesn't matter whether it's soft or not. Obstruction, in the box; penalty. There was another dangerous tackle on Kante I think on the counter where he was sent flying but the play continued and Leicester scored. That should've been a red imo.If that was a penalty, football doesn't exist anymore. Clear foul on Özil from Morgan before the penalty missed, dive from Vardy, handball from Kante which didn't result in a definitive penalty, clear red from Drinkwater. If anyone could complain about the referee today it's Arsenal.
The ref just wasn't that good.