Hey Scott- thanks so much for your reply, it actually really brightened my spirits. You are right- I can keep up with my buddies on the skin track, and have seen huge performance gains over the past two years- I am in the best shape of my life.
I had re-read the article in the book with that title, but had not seen this web version of the article. Point taken: If I want to improve my performance on the uphill I would be wise to focus on things I can control: optimizing my aerobic base, and improving technique & economy.
I retrieved my touring skis from the dumpster, and put the VO2 test results there. Thanks again for your input.