You say the power comes from God but in Christianity Jesus is God, so he does the power himself.
And what you say next is illogical, how does being able to relate to something = limited abilities??
If you're saying Allah can't incarnate in a human body and live among people then he indeed has limited abilities!
Jesus was limited, there are many quotes of his that proves this.
thirdly, its not that God is incapable, He will not show himself but give clear signs to submit to 1 creator