I don't really see the relevance? We can rephrase your comment as "if people like your game, sometimes they follow your Twitter account".

That's just an example of using Twitter to advertise your other content.

Marketing wise the difference is huge. Say you release a new game, and want to know which marketing channels to focus on. As it turns out, Twitter will not give you much new customers that haven't come into contact with your game before.

I agree with you that once you have those followers, you can leverage that with other content. But building up your audience mainly needs to happen through other channels.

Thanks for clarifying, this is an insightful interpretation.