Yeah, I did not weigh the doors with all the amenities in them, but glass, glass tracks, side wing glass and their tracks and hardware, cranks, rods, lock strikers, handles, cam wheels, interior panels, seam sealer, sound dead and flash undercoating can add as much as it needs to come up with 78 Lbs per door.
The steel door hinges I know weigh exactly 11-1/2 Lbs for all four.