I went from a Macbook Pro 15" (pre-retina) to a 2015 Macbook Pro 13" Retina (with max resolution: 1680x1050), and I haven't been hindered at all. I code on it

I went from a Macbook Pro 15" (pre-retina) to a 2015 Macbook Pro 13" Retina (with max resolution: 1680x1050), and I haven't been hindered at all. I code on it daily. I did get some upgrades like the 16GB RAM.