All 3 films are so different. It would be easier to count the scenes that are the same it is that different.
There are even some shots where different charachters are shown on the screen at the same point in the film.
I would love to compare my 1988 version to the early NTSC releases of LaserDisc and VHS.
All being well, there should be a release of some of the early LaserDiscs shortly but I am unaware of any plans to capture the VHS sets.