What's the difference between David Cameron and this?

It appears that David Cameron doesn't fancy having to deal with any difficult questions, and is giving Jeremy Paxman the swerve.

Given that I thought that Nick did really well despite Paxman being his usual sneering self, one might almost get the impression that DC didn't think that he could do as well. Actually, now I think about it, he probably couldn't...

Big Bird is usually only too happy to answer questions though... and he's certainly more credible... and he isn't a chicken...