Sorry Paul, but you have completely made this up. At no point were either of these films released with different titles so the onscreen titles are the original ones.
While I find it quite plausible that the plan for Halloween 5 was to have the subtitle 'The Revenge of Michael Myers', indeed, the theatrical poster featured it, at no point does that subtitle ever, or has ever, appeared onscreen.
After Halloween III disappointed viewers by not featuring Michael Myers, Halloween 4 was always planned to have 'The Return of Michael Myers' as its subtitle. It was part of the marketing, both onscreen and for the poster.
Your insistence that this film is called Indiana Jones and the Raiders of the Lost Ark does not make it so. Recent releases of First Blood now have Rambo: First Blood on the box. In actuality, Rambo was the pre title of First Blood Part II. Realistically, the third one should have been called First Blood Part III, but as Rambo, like Indiana Jones, was more famous as a character than the actual movie titles, it was called Rambo III.