I wasn't comparing them in terms of app stores per se but the fact they don't really seem to be aggressively optimizing the UX on the store the way Google does

I wasn't comparing them in terms of app stores per se but the fact they don't really seem to be aggressively optimizing the UX on the store the way Google does with most of its (other) products. If Apple were doing it right, after this much time and this much data had been collected the App Store should basically be fast as hell and reading my mind when I log in, like Amazon does. I worked at Etsy for a number of years which has many similar attributes as the App Store, and lots of slow, steady progress was made by running many experiments and aggressively maintaining performance. I'd be licking my chops at the low hanging fruit if I were the one tasked with starting to hill-climb the App Store UX. There are so many things you could try, and with the type of traffic the App Store gets, 1% experiments could almost certainly get you sufficient data to really drive up conversion rates without negatively impacting many users along the way.