Hardware is considered better than Saturn 3.
Let's compare,
The actors are better in Saturn 3: Kirk Douglas, Bo Derek.
Hardware has better music, and Lemmy from Motorhead is in it. Hardware is about a dystopia, and Saturn 3, well, we don't know how Earth is like, this future is very shallow.
Bo Derek is NOT in Saturn 3. That was the late Farah Fawcett.
Saturn 3 was the better movie. It had a strong cast, excellent production values and great cinematography. Hector the robot menace was actually well designed and executed.
Hardware had a good story, some imaginative cinematography, SOME good sets, lots of gore and lots of atmoshpere. The two leads were great. The robot however, was a huge letdown. It was what, three to four feet tall? It was clunky and not very threatening.