On their website Qihoo 360 one of it's features says this
Superior Threat Detection
Intergrating award winning antivirus engines from 360 Cloud Scan Engine, 360 QVMII AI Engine, Avira and Bitdefender to provide you with the ultimate in Virus detection and protection capabilities.
Keyword: Avira and BitDefender.
Can some one explain this to me. Now comes Avira along with BitDefender?