Pay attention to the whole discussion.... I was saying that I was amazed that the series wasn't canned after 3 due to falling sales. Though if it discludes subsequent releases, then we don't have the numbers on SE. Which does make the point rather invalid.
They didn't can it due to it's high praise among the community. Honestly if they'd advertised DMC4 like they did RE:ORC and RE6 then it would have probably sold another mil at least.