Roy, I can’t see why you should have graded differently.
If I assign a grade, I may be even far off from it, but it’s that grade that I would assign.
If I become too tight, or too loose, it may depend on how much better I learn to grade, and how I see the general expectations out of a given grade are from the majority of people, but that’s all.
Grading has a subjective gray zone, but it can’t bee too large. Hey, you have agreed on such a good thing as grading standards in the USA (we don’t have them here) and now all of a sudden they become so subjective one can change them so heavily we can no longer agree upon them?
Opinion, OK, but whatever an opinion is (it seems there is a bit of confusion), the opinionable part is relative as long as you have decent grading skills.