- the absence of motion smearing, this is very evident
- the presence of stars, especially those in the opening shot of SW
I also noticed they are much brighter than the definitive, so in some scenes you see more (things which are black or very dark on the definitive). I can't say if this is better or not, it just gives you a whole other viewing experience.
But after the examination I sold them again (for $45, plus shipping), the reasons? It has much more noise, the colors are way off in some scenes, especially the desert scenes. The shot in ROTJ of R2 and 3PO on their way to Jabba's palace has a horrible, oversaturated and weird look for instance. The definitive also has a bit more detail, and I discovered what THX certified sound means.
Now, the noise was my biggest problem, an X0 will deal with most of that, but there definitely is more noise on the discs. Zion, you haven't seen these on the X0 yet, right? And what you said about the shift towards green (due to film ageing or not), could that could that have something to do with the green shading present in Cowclops' v2? I noticed it in DJ's Definitive capture aswell btw.