MacBook Pro 2016 default resolution
I am confused on the Default Resolution for the new MacBook Pro 2016 15"
The display is 2880x1800 pixels, so if I understand retina technology correctly the best display resolution would be 1440x900.
BUT, if I go to display settings, and select "Scaled" the default option shows "looks like 1680x1050", when I select this option it looks exactly like when I have "Default for display" checked, so I am assuming the default display resolution is "1680x1050".
Shouldn't it be 1440x900, so should I select the scaled option that says "looks like 1440x900" to get the best performance and appearance? What am I missing?
thanks in advance
MacBook Pro with Retina display, macOS Sierra (10.12.1)