because nobody needs an sd card slot. and nobody replaces their battery. at least not in an iphone. i've owned 4 iphones since 2009 and _never_ had to replace a battery. the phones are still working, btw. (well, the 4s battery would need a replacement - after 4! years)

these two are just bs benchmarks. like floppy disks and dvd drives.

edit: the display. well, i'd go so far as to say that nobody in the industry has as good as displays as apple. and nobody needs higher resolutions on that physical space when they already can't see pixels anymore.