35 years ago the color were different on the two prints probably but not necessarily better than the other. It’s just today the Eastman prints have faded where as the Technicolor prints have not. Technicolor had it’s own issues and especially Star Wars prints since they were at the end of the Technicolor processing line.
Yes, as poita has said, the SW technicolor prints were not really up to standard, with a lot of shots turning out too green.