In the Oxygene/Equinoxe song book, Jarre says that Equinoxe is even simpler in terms of arrangement and melody, which is true if you look at the tracks and compare them to Oxygene, which has more of that impovisationary style combined with orchestral composition.
Equinoxe is more composed.
And I really think it's that careful balance between improvisation and regular composition that sets Jarre's electronic music apart from others, esp in the 70's period.
Where as KS and TD went on 30 min improvisatory adventures which really tend to stretch your attention span, not to mention that their style of music, as perfectly described by KS are not as exciting as merely trying to get you to fill in the pieces with your own mind, so if you have poor imagination tough luck, KS and TD are boring (to the masses that is

)
Jarre on the other hand has a somewhat perfect balance between the flair of improvisation and a carefully, thoughfully composed piece of music, esp with Oxygene. That I think is one the main reasons why people when asked to differentiate and describe his music compared to his peers, people describe it as more human. The other being that he choose very musically pleasing timbers on both albums, even if at first some of the sounds sound faaaar out maaaaan!

Without faith nothing is possible. With it, nothing is impossible.