I enjoyed watching this and the reasoning behind it is very sound. It is a great explanation and it will no doubt help some people 'get' what it means.
I did however think that after holding our attention for almost 8 minutes with good arguments and appeal to reason he blew a lot of the goodwill he built up by saying, as his last words 'lucky I'm not wrong'. He was putting himself across well right up to the last seconds. One of the biggest turn offs for people learning more about athiesm is the smarmy "I'm so right and you're an idiot for believing in God" attitude that some have.
This would appeal to a lot more people who are genuinely seeking if it was about 5 seconds shorter.