It's sad to understand that sledging is right for Aussies and not Indians. It's sadder to understand that sledging is part of the game, in the first place. It's just a coincidence that the Indians have lost some focus at the same time they started sledging, the Aussie way. To me, Sledging and staying focussed are 2 different things.
Gavin is just feeling bad, the same way i used to feel when 1) Glenn McGrath used to sledge the best behaving cricketers of the World (Sachin and Dravid) 2) Michael slater used some unutterable 4-lettered words against Venkat Raghavan
The whole point is that winning doesn't make the Aussies "flawless". They'll get back what they've been giving out to the world. They may still manage to win matches, but they've never managed to win the hearts (barring some exceptions like Steve waugh)