If God's perfect systems are not imperfect, then that would mean that we too, being a creation of God, are perfect.
If we are perfect, then we would be able to see through Satan's deception. After all, perfection should not be able to be deceived. The Ontological argument (if you go for that sort of thing) indicates that something that cannot be deceived is more perfect than something that can be deceived.
hence, if we are one of God's syustems, we must be perfect.
Therefore, we are seeing the world without deception from Satan, or God deliberately designed us to be able to be deceived (this would allow us to still be perfect, as we are exactly what he wants - the perfect humans as far as God is concerned).
So either we are seeing the world as it really is and God's systems are indeed imperfect, or God designed us to be deceived by Satan, in which case who are we to argue with what he wants?