IMO, ratings are relative to each other. As long as you are consistent in your publication, that is all that I would expect.

all easy hikes < all moderate hikes < all strenuous hikes < all Chris Dailey hikes

I wouldn't care too much about the relative difficulty within the "all easy hikes". The WMG offers a few curated hikes for each category in each major regional section, for example. I do appreciate the additional details where a particular hike strays too far from the norm, like when you talk about Huntington Ravine, North Tripyramid Slide, anything in King Ravine, Wildcat, etc...