I love Sam the man Jackson. Still do, but I'm on A.O. Scott's side on this. I mean, I'm sure I'll love the Avengers, but Scott is free to have his own opinion. Not everyone is going to love it and I do think Jackson reacted rather childishly to the negative.
Furthermore, Scott stayed classy with his response. He didn't even call his reaction childish which he could have and he would have been right.
Why the hell would Jackson even care anyway when the movie is getting great reviews? Why would he focus on one review? A.O. Scott is but one man. Is Jackson so insecure that EVERY SINGLE critic must like his movie? Get a fucking grip Sam!