Really? The ipad air 4 and the smaller ipad pro have the same screens? Did you forget about the 120hz display?
Lets be honest, no professional is going to be scrubbing timelines on their ipad no matter how crazy the spec. Insufficient color accuracy was not what was stopping professionals before.
Your standard youtuber might, but most aspiring creators are probably still shooting 4:2:0 8-bit. Do you really need local dimming and all that crap? I'd wager pro-motion display is more useful because everyone seems to shove in slow motion b-roll every chance they get.