Exactly!
Its like trying to tell if a picture is from a 4S or 5 is nearly impossible and completely impossible if not side by side.
Screen....meh its taller so text stayed the same size so that doesn't help my eyes. Just less scrolling, the part I don't mind.
Performance. Now Facebook opens .5 seconds faster! My 4S is fine currently its not like I had a problem with it being too slow.
And data. That's what I want. Verizon's 3G CAN be more then adequate but usually its terribly slow. I'd like LTE.
I just couldn't justify the 5 and I get iPhones at no expense to me via my employer. Instead of abusing that privilege I'm gonna hope for more this year, or keep my 4S until the 6.
I can tell the difference between the photos, especially the macro shots.
The performance is way better, especially when playing graphics intensive games.