McWho? Haven't they replaced their screwed up name and products with some Intel stuff? I thought they finally transitioned to Intel Security or something like that.
Not at all surprised Bitdefender is number 1 though. Romanian and Russian security is well known in this industry. Usually, Top 3 security products are (in this order) : Bitdefender, Kaspersky, Norton.
I was using Bitdefender for a couple of years , but switched over to Kaspersky , seems lighter and more responsive than the last two incarnations , I also tested Trend Micro on one of my machines , was very impressed .
They are 1 and 2 most of the time.
Kaspersky tolerates MBAM Premium , much better than Bitdefender.