Hmmm, I’ve never noticed what you mentioned on my recent phones. That said you should test a newer android yourself before making a purchase!

More of my personal experience… I have a Pixel 7 XL and a work Iphone which I think its either a standard 12 or 12 mini, not sure which. Generally they are the same in terms of scroll or input lag. There is lag on both when they are overheated, especially on the Iphone if I put it on a higher power charger (I trickle charge both when I can).

Beyond that, I can’t offer guidance. In my personal experience the Iphone UI is so frustrating that I can’t judge which one performs “better” or not, because only the Android feels comfortable to me.