Well that's an interesting argument AND admission.
I guess it's a bit like me admitting that Rudd has made some big blunders, which I think he has......but then reminding you guys of who the opposition leader is. Fair enough. Depends how you see it.
Personally, I think Rudd has a very good understanding of economics. I think you'll clearly see the difference in understanding when Rudd and Abbott go toe to toe in three debates.