I watched the video too, there still isn't that much of a difference. It's there, but I think "seeing how much more powerful the PS4 is", all it really shows that it really isnt all that much more powerful if the difference isn't bigger than that.
And still, Ryse looks better than this or any other game on PS4
That said, I do think the developers are capable of getting "above the bar", there are games that have done that on X1. Multiplats just arn't the greatest showpiece of that kinda thing, as they likely don't want to see the extra amount of work optimizing like studios working on exclusives would. Then I also think many devs overlook the possibility of going something other than 720p or 1080p. I think the 900p option seems pretty good. It's considerably better than 720p, but not quite as demanding as 1080p. Ryse is 900p, Titanfall said that they're aiming for 900p for launch, Thief is 900p, I would hope that this becomes more common. In the end I don't care about 720p at my usual viewing distance, but for a few rounds of Titanfall I moved a bit closer and it was visible there, but I don't think 40" TVs are meant to be watched from 1m anyways
Obviously, more the merrier, but it won't make or break a damn thing (at least for me) even if it's not 1080p.
I hope MGS is better optimized for PS4 than TR: Definite Edition was. The free pass PS4 got for "running 60 fps" in that game is a bit silly, cos it didn't even hold a near constant 60 fps
So yes, while PS4 is more powerful than Xbox One, no doubt, that too struggles to do 1080p/60fps.