Complex sentence: They are differentiated by the unrated version having a red stripe on the cover, and they have different pictures on the sides of the DVD cover (the unrated having a picture of Mitsuko).
Split into simpler sentences: They are differentiated by the presence of a red stripe on the DVD cover of the unrated version. The two also have different images on the sides of the DVD cover (the unrated having a picture of Mitsuko).