It "breaks the traditional conventions of story, cooperative and competitive multiplayer modes," etc.
This is NOT confirming competitive multiplayer. It's saying it breaks the standard conventions of those modes. Which means they're saying it's going to be completely different from "Co-op here, competitive here"
But what this means, we don't know yet.
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Regardless, their is still some form of coop and multiplayer. How exactly these are intertwined is hard to say.