He had done pretty well with tactics up until Sheffield Wednesday in the cup, and then Wenger did what Wenger does.
He showed no respect to the opposition and made horrendous fuck ups tactically. We lost. Lost two first team players, and stalled our momentum.
That game there is the reason for the poor performances against Bayern and today. Apparently we were a bit lethargic against Swansea too....
I think you're right that we shoudl be further ahead by now. But at the same time, we should give credit to AW for some good tactical changes of late. Bayern at home was a prime example.