I think they raised the dark levels on the original VHS release because of the medium itself offering a lower quality experience. However we don't know how the transfers were done with the Laserdisc (widescreen release) or DVD/BluRays. What print they used and what levels? Maybe someone can dig up some of Warner Bros publicity sheets on the movies about that or someone who projected the film may know (they have a few projectionists on Home Theater Forum).

That 1st trailer always looked very dark due to having been put together so quickly during production. I don't think it can be an accurate depiction of what the final print looked like.