I tweeted a link about an upcoming debate at Cambridge between Dawkins and Rowan Williams a few hours ago. There are replies saying Richard will wipe the floor with him. I’m not so sure. Williams was an academic before he was the archbish, and now he’s not the archbish any more.
He almost certainly knows of better arguments than the kind of highflown archepiscopal bafflegab he gave to the House of Lords and so on while he actually was the archbish. And since he’s not the archbish any more, he may feel less of a duty to sound churchy and archepiscopal.
There’s no chance that he’s actually stupid. The fact that he used to say a lot of stuff that comes across as stupid to atheists doesn’t mean he is actually stupid. It’s more likely a déformation professionelle. I would think that when arguing with Dawkins he’s well able to come up with things to say that will prevent the latter from wiping the floor with him. Whether he will choose to or not is another question, but I’m thinking he probably will.