This argument has been going on for a decade or more now.
EPA Highway cycle is not steady cruise at 60 mph, that’s why the ‘85 T’bird and ‘86 Ranger you mentioned both get 22 mph on the official test cycle.....
Fast forward 30 years and vehicles are much heavier, accelerate faster - it’s amazing that a 3.5EB F150 gets similar fuel economy as those two vehicles
As far as I know there haven't been any GTs delivered to dealers yet... not even stock orders. Some retail orders have been produced but they all seem to be going into limbo status, so OKTB must have been issued at least initially... it's looking like the GT launch on the new hybrid line at the MOD Center may be a repeat of the main line launch. I believe Explorer Hybrids are arriving at dealers now though.