There will be more 60fps games next gen than we ever saw on PS2, which had quite a few....
A Zen2 CPU is a massive leap over the Jaguars and devs have not been pushing the cpu's on PC in interesting ways, so many games don't ever get close to full utilization of current high end cpu's and when they do, it's usually draw call overload, bad optimization etc.....
I look at some of the games that we got this gen on Jaguar cpu's with large worlds, lots of physics; GOW, Spiderman, Days Gone, Uncharted 4, Shadow Fall, Drive Club, SOTC Remake, Horizon Zero Dawn... etc..... These are the games that have been pushing visuals in games this gen...... Now these devs have all this CPU power...... It's only now we're going to see what i7 and Zen cpu's are really capable of... Only when console first party devs get a hold of such hardware we will see.....its guaranteed that they will push these cpu's to the limit.......And that means a big Gulf in possibilities from this gen to the next......
Don't forget, these devs wanted to run many of their games at 60fps this gen, but it was not possible on Jaguars, at least not with their vision being severely compromised. UC4, DC etc... all aimed for 60fps at some point in their development....... So devs actually want to push 60fps, and next gen will be the perfect platform for such a transition.......