Nope. Bigger audience with a Teen rating. Halo 5 isn't even rated M anymore.
English
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Audience only matters for making more money other than that I don't think it will have a major impact considering cod has one of the largest audiences in video game history
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That's what I mean, though. Activision will make sure to keep it a Teen game to maximize $$. Whether or not that impacts the story and delivery is up to the writers.