But half those points aren't even special
Not sure why you even expect it to be special. My point was that he was featured in much major stuff.
I would also go as far to say that there are more comic book readers than people who watched DC animated shows AND cared about them so much that they still remember stuff.
And that's the main problem with "you people". You think that Raven is a popular character, just because:
1) You know her from the animated Teen Titans show,
2) additionally to that you expect all the people who watched the show to also play Injustice and demand her as a playable character ...
... which is stupid, if you think about it.
It doesn't take a smart person, to actually realize that just by plain logic Red Hood would be the more popular character for this game, because it's a game that is based on DC comics and will mainly be monitored by people who:
1) Want to play as Superman, Batman, Catwoman and Bane,
2) Want to play as their favorite DC characters, if they're in,
3) Will play the game, because it's a fighting game and their into these kinds of games.
What do you think how many of them will actually buy the game, because Raven is in it? Don't be silly.
Judging by the customers logic Red Hood would potentially get them more customers, because he is the more popular character (if it's about the characters, this game and it's customers) and PROBABLY also one that more people identify with, because most of the readers are males and (now I'm guessing again) most of them are rather into male superheroes.