I don't think Time Magazine did it with any such ulterior motive. It's stretching imagination too much! Why we can't accept any fair evaluation with an objective mind. I would attach greater importance to the study itself than bringing in extraneous element of which party benefits or its far-fetched motives!
I agree! Also, the basic and most important measure of any good government is the well being of the common and poor people. I don't care much about the correct procedures involved ins electing any PM or president or anything such, but I do understand that if a government is really doing well, then the number of people that go hungry every day should be less. In India, there are millions of people dying from hunger and malnutrition while at the same time millions of tonnes of grains rot due to mismanagement. This may be something that is not related within the scope of a PM's role, but ultimately all such issues indirectly fall under the government as whole and its policies!
When we think of such and more issues, he has failed miserably!!