If you are a realist you will know that nothing is surprising in football. Also by your own logic they beat a Man City team that are a much better side after 36 Premier League games than Arsenal.
Also, everybody seems to think that the Wembley pitch is energy sapping but after today's result I would have thought it would be awe inspiring.
I've said from day one that Martinez is the master of psychology & he will use this win & milk it to the maximum.
Bottom line (Pun intended ) Bog Rolls all round in Norwich, Sunderland, Southampton, Newcastle & B6