I currently maintain a legacy C+ app that runs on x86/x86_64/armhf linux, all 4 android archs and x86/x86_64 windows.
The linux compilation phase takes 1m, whereas on windows (using MinGW) it takes 10m. It's not the end of the world, but would the MS compiler be faster? Better?
MSVC is probably about the same as mingw. Compiling stuff on Windows is slower because compiling creates a lot of short lived processes, and process creation is a lot more expensive on Windows NT.