This movie is not a PEPLUM and yet...
By looking at this image, wouldn't you think it was a PEPLUM?
The costume sure look like those from a PEPLUM movie.
There's a scene filmed at that famous waterfall.
There's revelry, with handmaidens plying a man with libations.
There's even a dance number.
Our heroes are surrounded by men with lances! That's Fausto Di Bella and Sherry Buchanan.
As you can see, this is actually a (disco) science-fiction movie.
The original Italian title is GIOCHI EROTICI NELLA TERZA GALASSIA (1981) which roughly translates as EROTIC GAMES IN GALAXY THREE. This movie was retitled with a myriad of different titles, including STARCRASH 2. The only connection this movie has with the Luigi Pozzi opus is that it uses special effects from the original STARCRASH. But it's actually just a PEPLUM movie with a (then) new fresh coat of paint.