It is true, the ref was questionable for both teams but this does not make it fine, it was Juve who got 2 goals from wrong decisions and Juve who picked up 3 points because of it. This is what I dont like... and Im sure you'd feel the same if it happened to Juve and the opponents got 2 wrong goals.
As for proving something. You have alot to prove because there is a good chance that you may come away with nothing. OK you are tied for top, but despite yesterday's win, Juve have been struggling recently and if Capello craps it against Real and brings in for Pessotto for DP then Real can make Juve pay more than the current Roma can even if we have a great front 3.
Juve work hard and are industrial but maybe teams need a little more than this to win Serie A and IMO Milan are the team which have it. As I said its only an opinion of mine personally and I could clearly be wrong but at this point Milan to me are huge favourties for the scudetto and not only because they are just as lucky as Juve.