Er, no it was articulate, accurrate & unmeaningless.
After Jutland, we see these developments as regards armor.
Only the United States, which got into the battlecruiser business late (there was a general prejudice against high speed in the USN), went whole-hog for the "Fisher-ite" conception of the battlecruiser, designing the enormous, thin- skinned LEXINGTON class. These were much modified in the light of British experience, as transmitted to the USN by visiting constructor Stanley (later Sir Stanley) Goodall, and a lot of armor was added.
The "pure" (Fisher-ite) battlecruiser as a viable tactical conception was discredited at Jutland, and now the terminology gets rather strained. After the First World War, Britain finished HMS HOOD to a much modified design, with much heavier armor -- she was more of a fast battleship than a battlecruiser, but the original name stuck. Likewise, magnificent, never-built G3 class "battlecruisers" were more heavily protected than any existing battleship
http://www.gwpda.org/naval/bcs001.htmHere's a good article about the propellants used on both sides.
http://jutland.wikia.com/wiki/Damage