I will never get my pack weight down to 15 pounds, but he is right that significant changes can be made in the sleeping system, pack and tent. Elsewhere, we have reviewed our Big Agnes tent (4.6 lbs), our small sleeping systems (mine is 2.47 pounds) sleeping bag, pad and pillow, Kimberly's is 3.4 pounds), and my pack is an REI flash pack (REI link) (3 pounds) and Kimberly's Gregory Jade (REI link) is 3.97 for a total of 7.7 lbs for me and 9.7 for Kimberly -- that is tent, sleeping system and pack. Not so bad for a couple of aging scouters.
Here is Mike Dubrall's chart from his blog for your comparison. Where does your stuff fall?