So, anyway, my point is:
Lucasfilm tried to justify the quality of the OOT (non anamorphic and all that) by telling that the used the Laserdisc master to do this DVDs, and that the quality of the source was that.
But then we watch A New Hope and... hey... wait a second... it is NOT A New Hope. Is just STAR WARS. It has the opening crawl... that was NOT released on Laserdisc. Hmmm... there's something strange here.
Maybe this version comes from the original negatives (Lucas destroyed them? LOL!!) and was "downgraded" on purpose, just to keep the people still wanting a decent version.