Is Christianity truly a monotheistic religion?

[El Blanco]

We don't see the devil as God's equal. They are not on the same level. God is clearly superior. Lucifer is a fallen angel who used his free will to defy God. He promptly got his ass whooped.

Believing there is a being out there who is more powerful than us does not mean that we believe that being is another god.

Its like saying that the guy at the basketball court down the block is as good as Tracy McGrady. He might be better than you or I, but he is nowhere near McGrady's status.