Butler better than Barnes: Not absurd at all. He was bad in college he has been bad through two full NBA seasons. Sure, he's 22 and has a couple years left to improve, but the track record for bad players suddenly becoming good isn't great. He's the next OJ Mayo. Some team will pay him 9 million based on his high school recruiting stock. He will never, ever be worth that much money. I would bet massive amount of money on him never becoming a productive NBA player.
Butler, on the other hand, has two full seasons of very productive NBA play under his belt. It's very likely he continues to be a productive two way wing in the NBA. Barnes has one "skill" which is scoring and through 4k NBA minutes he's been exceptionally shitty at it. He's on your team, you love him, he's young and still has potential. I get it. Nothing, absolutely nothing about his track record after high school has justified the hype.