This might sound like bashing or ill-informed, but wouldn't the fact that American players aren't SEEING the decks in the DtB also be highly considered the same as saying "These decks don't belong here because our environment is better than other countries", and thus not worth playing? Just because our reader base is American doesn't mean they wouldn't want to know what makes them obviously better in Europe than they are here. In one way or another, it proves that one section of the world is more evolved than the other, and I'm seriously thinking it's in Europe's favor.
You have to remember that the average source member isn't even going to understand the decks on the level you adepts and mods can (or our more prominent regular members, for that matter), or else we'd all be on the same level as far as members go. Then the LMF wouldn't even exist, because everyone would know already what's good enough to play/test.
You've debunked on numerous occasions that the rumors of adepts being promoted just because their friends of adepts/mods, and proven that said adepts are actually putting up results showing they are good at the game. But why would you expect the same level of understanding from your casual readers who just want to check up on a good gauntlet to prepare for? Because stateside there's only X decks being played regularly, thus that makes them the only good ones? It really makes it sound like we have literally no creativity and just want to play what wins at the time, and swap from Goblins to Thresh to whatever is next in line.
If a deck is putting up a regular showing in Europe, I don't see why our metagame should be so different in any way other than 1) it's more evolved, which is simply not true, or 2) it's less evolved (which many, including myself, seem to believe), and should accept the data from areas which have a more steady flow of tournaments and what appears to be a much more diverse metagame. The fact that the DtW and DtB status of European decks is far more diverse than that of American tournaments should prove that theory to be pretty correct, they are far more akin to a true balance of power in the format than we are.
To be honest, anything less than putting Europe on equal footing is realistically doing nothing more than keeping the player base of the source in general in the dark, because all we see are the same 4-5 deck lists showing T8 because nobody is willing to try the others on anything more than a 1 or 2 showing per tournament. Statistics would prove we won't see those put up results until they catch on, because in a balanced metagame 1 deck in 50 has a pretty poor chance of continual T8 performances, it needs numbers (or being far unbalanced) to continue staying at the top.

