The “data” in question doesn’t really prove anything, there are a lot of different ways to interpret it. For example, it could be that iOS users are generally less technically savvy than Android users so need to look up things more often. It could be that iOS users perform the tasks in question more often than Android users. I don’t use iOS so I can’t comment on its intuitiveness, but this is really not the best way to show that one is more intuitive than the other.
Exactly my thought. The first thing I thought of was that there is a stereotype out there that iPhone is easier to use than Android, which apparently requires you to have more technical knowledge. Along with the Apple brand reputation, people who are less technically savvy tend to opt for iPhone more often, in my opinion. This would skew the data against iOS.