it's not what android can not do but what ios can not do...
android literally can do anything as long as someone developed for it...
but not with ios...its got os limitation...

android is all about choice and customization which each has its own pro or contra( eye candy vs battery drain)
for me, android phone is jack of all trade which can do anything, just not the best...
but choosing phone is more on what you wanna do with it, not whether it's the best...

do you want durability and water proof? can get sony GO
water proof only but better hardware? sony acro s
cheap phone as gift to your son or daughter? a lot of choice for android from samsung, htc, sony and etc
like to use stylus? get samsung note 2

it's android which give us a lot of choice...

ios give us iphone which is best at what it CAN do but not ALL...
if you feel iphone can fullfill all what you want from a mobile phone, then iphone5 might suit you