Great video, a la film trailer.
Hard to fully comprehend how well he walks in the heels as the view point isn't fixed, but probably still walks in them better than I could. Given he's not a size UK8, and more likely a UK10/11 or even larger, they might well be a 6" heel. Hard to know without some reference point.
As to the men/women and who walks better in heels, it's a useful point that girls get more practice and that might lead to be them being 'more expert' in a heel. I had in mind the hips joints in a women are potentially different (for baby carrying purposes) and for that reason, could rotate/swivel a little more effectively than men usually do. If there has been medical research that says this is not the case, I'd like to read it.
I'm aware that for myself, height makes a difference, and my ability seems to drop off past a certain point. For example, I can walk in a 4" heel like I'm wearing flats. (I'm told from the back, that might not appear to be true as I rotate my backside like a girl does - a girl wearing heels.) Up to around 4.7 inches high, I walk like someone wearing a heel, but not so badly it looks like I can't walk in a heel. Above that, approaching 5 inches, my gait is affected. Now given that 30 years ago I had no problem walking in a 5½ inch heel like I was wearing a 4 inch heel today, it suggests something in me has changed. The obvious is I'm 30 years older, but this must mean there are changes in my bone/muscle/tendon combination that is restricting my ability.
Not sex possibly that makes a difference, but some other aspect or aspects. Bottom line for me, I've always been able to walk comfortably in heels. It's a great feeling to be in them. I hope my weary body allows me to continue for some time yet.