Probably same reason many dismiss Nintendo games.
They see Nintendo games and their art style and don't want to be seen playing a kiddy game.
They see DoA and see the TNA and don't want to be seen playing that by people.
It's a stigma. Doesn't matter how fun or great the game is. People see someone playing Nintendo and they say "Oh you still play those kiddy games." People see someone playing DoA and they say "Oh you like those boob physics."







