Is he though? I can accept the argument that he's "better than Carr" in that his team has performed marginally better than Carr's team over the last few seasons but I really don't see what others are seeing when they say he's "by far" the best QB in the division. I feel like they're incredibly similar players and I would argue that Cousins has underachieved more based on what he had around him in Minnesota than Carr did with the Raiders. Last year neither team made the playoffs and although Cousins did have to miss a large part of the season, Carr played injured himself.
I'm not in anyway a huge Derek Carr fan or anything but again I'm not seeing this Kirk Cousins blows every other QB in the NFC South away thing like others are.