Guys, WTF is this???
Go to results on the same page!
"Airtel received the most favorable response in terms of speed, reliability and tech support. Almost 20 percent of the respondents were Airtel subscribers. The quality of installation might not be the most important factor but it certainly is the most ignored one with almost none of the ISPs putting efforts to improve the quality of installation. Airtel dominated the charts with 90 percent users rating it excellent when it came to wiring, installation and activation procedure. Shikha Shah is a satisfied Airtel subscriber from Mumbai."
thats previous years survey result, and "excellent when it came to wiring, installation and activation procedure" is still true for airtel