Well, let's see, say you and your new 5s are walking down the street with two of your buddies who both have android phones. You're all loudly streaming songs and youtube vids (hey, you're paying 70 bucks a month so you'll use the hell outta it) and suddenly, out of nowhere, one of them pops the question you've been trying to evade the entire morning: "dude, how fast is the ac on that thing anyways?". Nooo! Oh dang! Now you'll have to admit that it only has n wifi that tops out at a measly 90 Mb/s, ruining your entire MONTH.Someone please provide me with an example of how 802.11ac would improve the iPhone experience...
No, 802.11ac will improve ANY phone's experience by miles, no matter what anyone says, and ya'll know it.