I just finished a memoriable weekend in Moab with a rented Remedy 7. That bike is a beast compared to my EX 9 at home, and not necessarily in a good way. The Remedy was definitely the right choice for bombing down porcupine rim from Hazard TH. It was also a pain to force it up the hills on slick rock and every other trail for that matter. While I did enjoy the extra travel and weight on the massive down hill I think that the EX would have been able to handle porcupine rim without any trouble.
After riding both I think the EX is an all around more versatile bike.