you noticed memory? did you run multiple apps at the same time? or 10 browser tabs at a time? or it is your head telling you that it got 2GB?
come on man. hardware spec these days is more than what people really need on mobile devices unless you do serious gaming or 4K which are not what iphone is for anyway with its tiny screen.
if you have a PC with Intel i5, upgrading to i7 does not do you any good if you just use mail, text, browsing the web.
i7 only matters if you play games, video editing, photoshop, etc.
so yeah, stop exaggerating and misinform others.
You can easily tell there's more memory because apps don't reload and we can have many tabs in Safari open without them reloading constantly. As a former iPhone 6+ user (and former Galaxy s6 user), I can absolutely confirm this. You don't need to be some kind of serious gamer or do 4k filming regularly to realize this in everyday use. Memory was a huge concern for users last year and Apple addressed it. The 6S+ is a huge step forward. Have you even used one of the new iPhones? Maybe it's you who is exaggerating and misinforming others.