I didn't see it as wrong footing Cameron at all and neither was it a tough question. Why on earth all the hype about this? Let's be honest what ever you think about Cameron or indeed any PM it IS a tough job. I am sure that there is a lot going on in the job that would keep many of awake at night even if Cameron was mr popular and handing out £50 notes to the entire population!
This is yet another stupid example of how the meeja constantly tried to make a story out of nothing. Any throw away line by any senior politico will do. In the end it doesn't help anyone and it's not good journalism either.