Look at Asano's left arm in the 3rd set of comparison pics (his left, not yours). You can see a clearly defined line down its outer edge in the r2j. Now look closely at the same area on the r1/2uk grabs and you should make out a similar, but softer, more blurry line.
With many r2j releases the EE tends to be introduced at the master stage, and it filters through to the export releases as well, as they use the same masters - or maybe a tape master struck from the original. That is clearly the case here.
Do they consider the majority of people would prefer it? I presume so as it happens quite a lot. I guess most people don't look closely so just like the initial apparent sharpness.