What Cook did differently is he used his bargaining skills with I C C chief N. Sreenivasan by losing the second test match in lieu of a good performance in the third test match and even a possible third test match victory!
Insiders of the Cricket world know the Indian Cricket is like a market place where you can make valuable deals if you have anything of value to exchange or bargain with!
Cook came to this realization after seeing how "successful" Dhoni has been in his career and that it pays handsomely to deal with N. Sreenivasan!
Now a majority of ignorant, gullible Indian Cricket aficionados will spend the rest of the day indulging in refuting and name calling about this fact which is possibly the biggest worst kept secret in the World!