I thought he recorded at 1080p60. I do with my 3+ Black.
My videos are all a mix as I've only recently settled on 1080p60 and made allowances for the crap battery life.i love the new 60fps support from YT sooooo much smoother regardless in which quality you actually watch. I do upload in 1080p with 60fps though and i could punch myself for not doing it earlier as RJ mentioned that all OLD video got re-converted as well