Yea, feature length is typically 90+ minutes these days, but, there are quite a few movies under 90 minutes. "well over" an hour, though, has got to be at least nearing 90 minutes. 75 minutes or less shouldn't be referred as Well over an hour
I really think the "well over an hour" comment was just to stop people from complaining about the run time. He even admits that he doesn't know what it will be.