The only stat that comes anywhere near representing defensive pressure is the tackle stat. In 2011 Jurrah averaged 2.3 tackles, hardly the worst going around.
Yes, he could improve but so could 40 other players on the list.
To say that Jurrah "NEVER pulls his weight for the team" is ignorant, disrespectful and wrong. Many of us here are highly critical of our own players, but to question a players commitment to the team like you did is just rubbish.