I just looked up Bitdefender on av-comparatives,org and the latest yearly summary test shows it was the product of the year for 2014 and was "top rated" in 2013. Virus Bulletin also places it pretty much top quadrant with the VB100 award every month for all the platforms.
I was just curious as to why I had got a downvote and thought I'd make sure it was still independently rated highly since I last looked when I was deciding which product to use.