Brown is really good. He's the #1 on this team, but I think in a perfect world it would be best for him to be your #2. He hasn't shown an ability to make contested catches or make big #1 receiver plays. He catches the ball when he's open, which is great, but he's not dynamic in the air or after the catch, two traits you typically look for in a #1.
I think using his stats as evidence that he's a #1 is a bit misguided. Last year, some people used Zay's stats in comparison to other #2s to show that he was ostensibly a legit #2. I prefer to go with the eyeball test and what I see in terms of dynamic playmaking ability.