Those number came from the master development plan which was submitted tot he national forest, not from any PR material. The numbers can only be found if you specifically look for the MDP on their website and then scroll through a 114 page .pdf file. I don't for a second think those numbers were fudged to make it "look better".
Then, consider that the skilifts.org folks appear to have incorrectly calculated slope % as rise over slope length instead of rise over run, then consider the fact that they left out the 2nd steepest lift at the ski area, and also misrepresented a lift that's an up and over and should be counted as 2 separate lifts... I stand by my statement that I'm not trusting the numbers from skilifts.org.
Of course, Posaune had a good point: none of this has anything at all to do with the OP's original question. A question that is going to be almost impossible to answer I'd think.