maybe because of tests...
from:
http://www.techradar.com/news/software/applications/best-free-antivirus-9-reviewed-and-rated-1057786Why isn't Microsoft Security Essentials in the list? It's small, simple, and won't slow
your system down - but it's also just not reliable enough to justify inclusion in our best free antivirus software round-up.
When Security Essentials was last included in an AV Comparatives File Detection test, the program managed a file detection rate of 94.9%, placing it 13th out of 15. AV-Test's opinion was even lower. In its analysis of 2012 products for Home Users, Microsoft Security Essentials delivered the lowest "average protection score" of all, putting it bottom in a list of 20.
by the way ..this Emsisoft Emergency Kit is very powerfull AV scanner.
I have nerver use it before but now seems to me like good choice for second AV tool.
bad thing only is , free version don't have real-time protection
I will try use AVG again