I never played Top Gun, but I did grow up playing "Turn and Burn: No Fly Zone" for the SNES. All these years later, it's still amazing to me how much the graphics improved from one console generation to the next. I don't remember any other console transition being so consequential from a graphics perspective.
Super Mario 64 was an N64 launch title. Resident Evil 4 was a late Gamecube title. In my mind that's probably the biggest gap in graphical fidelity between generations of console. But I can see how going from NES games like Super Mario Bros to SNES games like Star Fox would be a close contender.
PS1 -> PS2 -> PS3 or Xbox -> 360 feel more iterative because they started after the 3D era had already begun. We haven't had a new dominant paradigm for gaming since then (besides mobile gaming).
