What is there to market though?
The historic place in the pantheons of English football, especially in the context of other “historic” sides being nicknamed and used to sell their respective clubs to new supporters the world over.
As much as we may not like it (and it makes me somewhat uncomfortable at times, I will not deny it), potential consumers of the club’s product (the football, as a brand) abroad are generally more interested in pedigree than passion, so something like the “Centurions” moniker (and a “dynasty” to hopefully come after) is one of the most effective (and, funny enough, affective) means to gain their attention.
The drop-in Saturday games I organise here in Boston, for instance, are full of Americans (and people from many other non-European countries including China and India) that gained concrete awareness of Real, Barcelona, Arsenal, and United after watching a Real/Barca dynasty review program, an Invincibles documentary, or a ‘Class of 92’ ESPN feature (production and airing likely paid for by United), which lead to them having an interest in watching (often requiring great effort or expense) Real, Barca, Arsenal, and United matches, which over time lead to developing an affinity with the club. Some of them to the point that they now purchase quite a lot of club merchandise and make yearly “pilgrimages” to watch a game or two (the holy grail, as it were, for most clubs attempting to grow their global market share; I know Manchester and London do not mind that conversion, either). They may have nominally known that each club existed, as they were interested in football generally, but their viewing of those exalting features was often what drove them to learn more about, and eventually “support”, the club.
Our club is most definitely working to attract and convert those football fans that have not yet developed an affinity for a specific club, and one of the best ways of doing that in American, Asian, African, and Indian markets is to emphasise success as part of the “brand”. The “Centurions” moniker, however cringe to us, is a supremely elegant method of demonstrating those traits that most attract those football fans.
As I said before, many would argue this is what is wrong with the modern game, and I am not sure I could really argue against that sentiment. However, it is the state of things and the club have to play the game (and well) if we want to continue to grow and further our dominance, as much of that is based on revenue, which itself is in large part based on the success of our global marketing strategies (and supremely aided by our success on the pitch, of course).