The words Buffon used were uncharacteristic, but he's a man who wears his heart on his sleeve. Emotions got the better of him, understandably. So I agree with Ale in the sense that he should have chosen his words more carefully, befitting of a legend who's adored by millions around the world.
That said, bringing the first leg up is necessary, even if the refs are different. When over two legs most of the 50-50 calls goes to one of the teams, it's important to bring it up. Actually the more we cry about it, the better. So the next time we are in the same situation there will be a shadow of doubt in the ref's mind. And sometime's that enough. The way Agnelli put it or how Chiellini brought up Bayern, is in my opinion, a really good strategic ploy. We are basically shaming referees into swaying their 50-50 decisions against the big Spanish two. It's all a big power play, and it's time we started playing it.
(Side note: English refs are a lot more strict about diving from what I've gathered watching EPL games. Ronaldo didn't get a yellow because he was Ronaldo. Oliver himself has given yellows for similar instances)