Nothing wrong in what Gambhir said, though I would prefer that he sulks because of these failures and in turn builds up hunger within himself to succeed in conditions that are challenging to him instead of finding solace in the fact that Australia/England/SA would also find it tough to succeed in subcontinental conditions. What he, Ishant Sharma, Virat Kohli display are passive personalities where if they lose, they wait for the opposition to come to their den and then beat them. Thats not a sign of greatness. Players like Sachin, Dravid, Ganguly, Kumble, etc have prided to doing well overseas than to wait for the opposition to come to India and get beaten.
India had no business to lose at MCG. The match got into the final day (i.e. the fourth day) with all three results possible. It was shocking batting that lost us that game. Sydney and Perth were hard, but India got the toughest of conditions (due to the toss) and were blown away.