I watched this game... I thought the ref's mistake evened itself out. Diego Costa didn't get a PK but neither did Tarquero.
It was another impressive win to me. The way this team counters is brilliant to watch. During the 2nd half you could just sense that anytime a fullback or a wide mid got the ball towards the side of the field they were immediately looking for a CM or Costa to start a counter.
I hope it lasts. I am unsure if Atleti can keep this rhythm but I would like to see them win La Liga. The Champions League, while amazing I think might be a little too far. I'd rotate more for Europe to compensate their legs for the title run-in.
Either way... 1 game at a time is the sort of attitude you need in these situations which Simeone has in spades. I don't think there has ever been a more truthful 1 game at a time view. It's not rhetoric, it's reality.