Yeah he won but it was rightfully so. I agree it wasn't the best performance of his career, but when against the other nominees his performance was simply the biggest standout/the best.
Actually, IMO, the best performances of his career were for movies he never even got nominations for! (Catch Me if You can, The Departed, Django Unchained)
I'm so proud of him. Just looking at all the pictures and videos I have never seen him so happy/giddy
"So you do this every year? I wouldn't know"