Thinking about it more, Lucas had to have been right. Obviously Greedo was meant to shoot first, its why the novelization, the shooting script, and the comic adaptation feature Han shooting first, to make it such a delightful surprise for everyone when Greedo shoots first in the actual film. Sure, it certainly seems like Han did, but filmgoers are so often wrong.

Its these kind of audience mistakes that led to Orson Welles complaining years later about people assuming Rosebud in Citizen Kane was the sled and not the nickname of Kane's mustache as he intended and why Ralph Bakshi had to endlessly explain that his animated Lord of the Rings ended in the middle of the story to symbolically represent the danger of trusting midgets with important tasks.

Its just a shame Lucas forgot to correct this mistake/misinterpretation in the initial edit, or in the re-released versions shown in the theaters in the 80s, or its initial release on home video, or later release on home video. But thank goodness we had the Special Edition to correct this gross misinterpretation.