The data available isn't particularly good outside of PC, but obviously that doesn't mean it can't do well in its lifetime sales.
And I'm a DMC fan. I bought 5 day one. So I'm not sure what crow I'm supposed to be munching in?
So, we have a week's worth of data for the physical copy of the game for two markets. Instantly, there is a big question mark around digital sales (which are becoming a more and more substantial part of the sales picture with every passing year). Japan's numbers are decent, the UK's numbers aren't excellent, but once again, we do not have the whole scope. Moreover, we know that it is selling pretty well on steam. We also have the vague statement from a Capcom producer saying that the sales "are not low".
So, what crow would you be obliged to munch on, then? Well, you stated that DMC5 isn't selling well. You stated it as if it was a fact. You don't have enough data to actually back up your statement, so it is a guess masquerading as a fact. Thus, if the game has sold well, you are going to have to sit down and munch on some crow.
I think there is a decent chance the game has sold quite well, but I would NEVER say "the game has sold well" when I don't have the data to back that claim up. I don't like making factual statements when I am not privy to the facts.
P.S. Of course, if you want you could always edit your post for accuracy. You could change
"...it's not a surprise its sales numbers aren't particularly good" to something like
"...it's not a surprise that the very limited sales numbers we have received so far aren't particularly good". Though that isn't quite as punchy, is it? ;)