Detecting the presence of malicious code is one thing, successfully eradicating it is entirely another.
The test, including the following antivirus solutions - Avast Professional Edition 4.8; AVG Anti-Virus 8.5; AVIRA AntiVir Premium 9.0; BitDefender Anti-Virus 2010; eScan Anti-Virus 10.0; ESET NOD32 Antivirus 4.0; F-Secure AntiVirus 2010; G DATA AntiVirus 2010; Kaspersky Anti-Virus 2010; Kingsoft AntiVirus 9; McAfee VirusScan Plus 2009; Microsoft Security Essentials 1.0; Norman Antivirus & Anti-Spyware 7.10; Sophos Anti-Virus 7.6; Symantec Norton Anti-Virus 2010; Trustport Antivirus 2009, relied on a modest malware sample, whose prevalence is however easily seen in the wild these days.
http://blogs.zdnet.com/security/?p=4818&tag=nl.e589
Their conclusion:
“None of the products performed “very good” in malware removal or removal of leftovers, based on those 10 samples. eScan, Symantec and Microsoft (MSE) were the only products to be good in removal of malware AND removal of leftovers.