Sorry but I don't buy this. If you're so sensitive with weight, you'd do your research before buying and you'd see the (ridiculous) difference would probably affect you. Like someone said earlier, we all pay for those impulsive buyers who can't control themselves and always have to buy things just for trying it. There's an overall cost that companies consider for the final pricing.
We knew from the start what the phone have to offer. Sorry but so far all those people coming from a 15 and return their 16s are saying stupid excuses that could easily be avoided by reading first. In fact, this whole thread is ridiculous. It's like someone buying a new car and saying it's the same as the last year one they already own and want to return it. You can't be taken seriously.
EDIT : What makes this whole return situation even more pathetic is all those people returns their phone after just one or two days. So basically try and trash it after. They not even try to learn and maybe like their new toy. Just for exemple, at first I really didn't like the camera button and also thought its a gimmick, but after a couple of days when I learned I could launch the modifier glass with it and lower the sensitivity of the button, I really like it and I think it'll be very useful to me.