LTE is a standard feature. There's nothing unique about it to iPhone. Many phones already have LTE. Its an inevitability in the mobile phone world. It's an upgrade that will be in every phone. It doesn't differentiate iPhone in any way from the competition.
A big feature would have been something like "Call any other iPhone, iPad or iPod Touch in the world for free via iCall"
Or perhaps something like 1080p recording at 60 frames per second. That would have been unique to the iPhone.
If I said "LTE is a big feature for this Android or Windows Phone" you would be saying the same thing I am right now about LTE being a standard feature on iPhone.