To a large extent, current Android flagship CPUs are "good enough" for the things people do with phones. Sure, current iPhone chips are much faster, but it doesn't matter that much for the vast majority of consumers (even for games, mobile games tend to target the lowest common denominator to a much greater extent than PC games; no-one's going to launch a mobile game that runs on the latest couple of generations of iOS and nothing else).

iPhones do likely get better longevity out of their faster hardware, mind you.