I've upgraded this year from a 2013 Air to a 2016 MBP 13" W/O touchbar, it's smaller everywhere except the front pointy area of the Air's. weight, cant tell the difference. Overall i love the new MBP vs. Air. biggest selling point, weight and retina screen.
The screen alone would put me off. Get one of the new 13" MBPs if you're thinking you'd like something more portable.
I have one and its the same weight, and smaler than my old Air.