Of course, we don't know how you computed the area of those blobs or even if you did indeed compute the correct areas. People make mistakes all the time, thinking they did what they wanted to do, when in fact, that was not true. I even made a mistake once like that, back in 1983 or so. ;-)
In all seriousness, we don't know how you computed those areas. My guess is, you did something wrong. For example, I downloaded those images into MATLAB, cropping just the areas of interest, then computed the number of while pixels in those regions. One blob had approximately 2.535 times as many white pixels as the other. So a very trivial computation tells me that your assertion is based on having done something wrong. But what? How do I know?
