anamorphic print - shotting the movie in its theatrical ratio and cutting off the sides for fullscreen. Oviously movies shot in this make widescreen superior. What was done with Star Wars.
Hard matte - Filming in fullscreen. Cutting off top and bottom. then cutting off sides to fullscreen. Widescreen version is better.
Super 35 - shooting the movie in an inbetween ratio so that the widescreen and fullscreen versions are pan scaned equally. Its worth noting that most effects shots will be done in hard matte for these movies.
Open (Soft) matte - shooting movies in 1.33 and simply cutting of tops and bottoms to create widescreen. Again effects shots are done in hard matte.
For the record bad_karma24 only Terminator 2 was shot Super 35. Terminator 3 was shot in soft matte.