Comodo is still being actively tested by Checklab and SE Labs. Also NSS Labs is testing the Enterprise edition of Comodo once per year.
The test below comes from a trustworthy organization, they tested Comodo in March against 658 Malware samples and Comodo protected 100%.
The website you posted is associated with a Rogue Antivirus product called TotalAV, if I remember correctly. VirusTotal says the URL is clean though.