This post and others like it strongly illustrate my case that the five-level system used here should be re-written.
The Level 1 - 5 system used here seems to be based on the four-level Shulgin rating scale (http://en.wikipedia.org/wiki/Shulgin_Rating_Scale)
The Shulgin system is much less detailed regarding the specifics of the experience, and as so, is both less valuable at classifying a certain trip-strength and more adaptable to other substances. Most importantly, though, the Shulgin system, while it does save it for last, does not equate transcendental spiritual &/or cosmic experience with the strength of the trip, as this site's five-level system does.
The trip described here matches Level 5 in strength, and in absolutely no way in terms of what is described in the classification used here as "Satori enlightenment (and other such labels)" People regularly report life-changing experiences of union with God, reality, or a sense of enlightenment on low doses of psychedelics; even more often, people report hellish struggles with their own minds' projections on large doses.