Is this scanner a scam?

I scanned a verified malware site detected by avast against Quttera FREE Online Heuristic URL scanner and it does not detect. I have scanned various verified malcious URLs against this scanner. Somehow all come up clean. So is this a scam?
The scan it missed was: htxp://zulu.zscaler.com/submission/show/ac6555063fae0cbd929f6009f65ca921-1337348604
see results: https://www.virustotal.com/file/245f0bb2ce0731bc3c02eeccacae45d81c03380588d5ce8bcc55568190cc0c2a/analysis/
See: htxp://siteinspector.comodo.com/public/reports/3090701
Quttera comes up clean for: Clean
/all-include.js
/enteka.gr/index.html
/enteka.gr/static/images/00back.jpg
/enteka.gr/images/00back1.jpg
/enteka.gr/swfobject.js
All come up with No significant issues detected,

I like to have some user feedback?

polonus