I feel sorry for anyone who distinguishes using some iteration of "real fans".
It's just a piece of entertainment and a rather average one at that. Playing through it isn't some duty or obligation.
But the problem is that it's more than a piece of entertainment. You can see it as a piece of entertainment but Bioware never saw it this way. You ignore what they wanted to do.
And if it was just that, why would people come every day when they only hate Mass Effect 3. They could only go in Mass Effect 1 or 2 forum to talk but no, they come here in order to stop discussion, in order to say that the game sucks and the ending ruined everything. Is that what "real fans" do?
Anyway, is it a duty or obligation to come here saying everyday the same thing when they ignore the story, the writing and what the developers said (quotations without context don't count)?