It would be interesting to see if there is more vertical picture information on the vhs than on the 2.00:1 collector’s edition dvd from 2004. The older dvd from the late 90’s, which was also 2.00:1, was non-anamorphic.
The laserdisc was also 2.00:1 if I’m not mistaken.
I always assumed the 2.00:1 framing was the result of it being the tallest AR that all shots in the movie were protected for if you include the vistavision vfx shots. Either that or Nick Meyer and Hiro Narita simply found it an aesthetically pleasing alternative ratio to the theatrical scope framing.