Sometimes people think they are engaged in a debate with one another when they really aren't. This can happen because they define their terms differently.
Lake Superior is really a sea, because it is so huge.
It's not a sea, because it's not salt. It looks as if Green has contradicted Brown. So there is really no contradiction at all. The debates about unemployment in economics, in recent decades, have been a bit like that. And, from one point of view, they were.