Yeah im not an apple fan. (My brother would have a heart attack if I didnt say that. He loves them).

But the fact they controll both hardware and software means they can run on lower specs. They dont use it as well as they could. But android having to allow others to develop hardware. Provides a bit more ability for manufactures to implement less efficient drivers. This is why some higher spec low value stuff seems so slow compared to equal speced cheaper Samsung stuff etc.