Those words were certainly vicious from Mourinho. But Wenger seem to have said his piece out of amusement, where as Mourinho looked a little rattled. I'd say JM came out looking worse imo. I reckon Wenger knew exactly what was coming from Mourinho and perhaps everything is working as intended.

I'm nervous about tomorrow night by the way.

Wenger was obviously referring to his time at Real where he failed to win anything in his final season despite having a team full of Galaticos. Pressure exists whether or not you have failed to win anything in 8 years or just one year.