AA Comparison Old IL-2 to CoD

[EZ1]

Today I captured screen shots from CoD and IL-2 classic just to compare image quality. The images were captured at 1920 x 1600 then cropped for size. I then went into MS Paint and added a 1-pixel wide line parallel to the antenna wires on the aircraft in both images just show the difference between a raw (not processed for anti-aliasing) line to the anti-aliasing of lines in both games. I also added a circle just for comparison. Even without anti-aliasing the raw line looks better than the antenna wire in CoD. I wonder why?