As seen the comparison screens between both sources, it is worth to have another encode from the 2D source as well.
Especialy for those how like a more blurred background picture as seen here. And also the 2D encode has a little more
deteils and they have diferent colors.
3D Source - 16.5Gb 24713 kbps Vs. 2D Source - 13.9Gb 20990 kbps