If you're removing 700,000 apps a year from your store for violating your own policies, it's fair to say your system is not only not perfect, it's horribly broken.
37% fraud-rules breaking rate is pathetic. Maybe they should spend time vetting these things before allowing malware-infested spyware out into the "ecosystem."
Another way to look at it is their submission process fails to catch problematic apps. Making it necessary to pull them from the store after they have been published.