I am intrigued to understand how StatCounter comes up with this graph. Do they have their own toolbars? Do they talk to ISPs? What is the demography of indian surfers who StatCounter have accounted for.
Without these parameters openly discussed this looks shady.
StatCounter provide an analytics service similar to Google Analytics. StatCounter seem to be referenced a lot on http://en.wikipedia.org/wiki/Usage_share_of_web_browsers so I assume it is about as accurate as we are going to get. The Wikpedia article has more details on the accuracy of measuring browser share.
Without these parameters openly discussed this looks shady.