User blog comment:ShonenChicoBoy/Shonen's Regimen and Tonic: April 2015/@comment-136273-20150417110210/@comment-3403804-20150417125541

The problem with the previous statement is that it makes a lot of assumptions, though to be fair I've used it sometimes myself if I believe that there is no other characters on the site who have quite reached their level of skill within, say, Kido. Hiroya has a similar statement, but if that's what you're after, you need to put a lot of effort into proving it on the article itself. Whereas most people just make the statement and then don't go into detail why, Seireitou's article describes him as the greatest Martial Artist in Soul Society, and I don't think anyone would disagree with him about that.

Another thing that I've noted, is that most Masters in a field aren't masters at all, because they've only briefly described their talents in a few sentences and then tacked on the description. Statements like "extremely powerful" and such are utterly meaningless without the effort to back them up. A true master-level character in my opinion requires a significant amount of detail in the base description, to convey their raw level of skill, no additions of techniques will do to convey it. If you want to make a true master, that is someone who excels in the field even in the company of other masters, you'd probably need to write several paragraphs describing their talent and ability. If you want to write a Grandmaster character that's legit, heh, then you, sir or ma'an, just got yourself a real project.