Soarin' IMAX has been downgraded so FoP at 8kl has higher ez. Not sure what the frame rate is but I expect its over 28fps easily. The fact that the entire side of the building slides up and down gives a drop feeling Soarin' cannot match. The screen remains hidden until the show begins (unlike Soarin'). It has a highly detailed queue (with an animatronic) unlike Soarin'. The screen doesn't distort the image, unlike Soarin' .......
I have not seen any proof that FoP is 8k. And it doesn't really matter. 4k is MORE than enough for the imperfect human eyeballs that are viewing the video. IMAX film is arguably 8k or more, but again, your eyes simply can't see it. FoP is definitely crisper than Soarin' 1.0, ot 2.0, was.
There is most definitely warping on the edges of FoP. The strobe start is cool, but hardly new.
The motion is more than Soarin', but the video is purposely low on action to keep motion sickness down to please the masses it is targeted to.