Apple is superior in every way. Better app selection, more innovative features like 3D Touch and live photos, and their ecosystem is much more polished (Mac, iPad, Apple Watch, etc.). On top of that, Apple actually supports all of their products for years to come. The same can't be said for the other. Hell, Samsung is just now catching up to the build quality of the iPhone 4 after years and years of releasing plastic phones.
Apple, becaues I own MacBook, iPad, iPhone, and waiting for new Watch, it's ecosystem keeps me with them, how well organised they are, to be specific (Macbook Pro Retina early 2015, iPad Air 2 (64GB), iPhone 6 (16GB) will upgrade to iPhone 8 tho.)