I tried it on max 2016 with default Nitrous direct3d 11 driver, texture map resolution in display performance settings is set to 4096 - the difference between bitmap and Corona bitmap can be seen, but it's very marginal, visible only when you zoom in close to 1:1 magnification. Interestingly enough, difference almost completely dissapears when i set interpolation to nearest neighbour, but then texture shifts very slightly in the viewport. Tested on JPG, PNG, TIFF, all 4096x4096 - no difference between formats.
Edit: GPU Nvidia 1060, drivers heavily outdated.