false

No. He said:

Could these be integrated into a cut of the movie (Revenge of the Fallen "Big Screen Edition" Style) as a single fan edit?

I have answered to that question and ROTF Big Screen Edition style is exactly the same as TDK on BR (1.78 for IMAX sequences).

and possibly the fullscreen DVD) uses more picture information on the top and bottom than the Blu-Ray cut does,

I really doubt it.

I think that fullscreen DVD is just cropped from widescreen, or in best case it is open matte which means that it may have more information on top & bottom than widescreen (but not more than BR), but still less on both sides.

But I have not seen fullscreen DVD (really, who would want to watch it? ;) ).

while this theoretical version would be the definitive IMAX cut for 4:3 TVs.

Right, but dont you think that creating version especially for 4:3 TVs is rather pointless?