Matousec + Norton IS 2012

I am not intenting to troll or to look Norton bad or something , i use a valid Norton IS product and i like it and i will use it for a full year.

 

 

But i want to ask something ,

 

 

On this website , http://www.matousec.com/projects/proactive-security-challenge/results.php

 

 

They do a proactive security test , and Norton did only score 20% , why so low , can you explain that  ?

I would rather have Norton concentrating on blocking malicious attacks than blocking known harmless files for the sake of playing leaktest games.