I would suggest that neither one is more than the other. While it is true that the Arm side is heavy leaning on the will, it is also true that in Cal we see the reality that God employs means within His sovereign working. Both sides would see the Devil's working in different ways (ultimate vs non-ultimate), but they would also see it as much as scripture allows, which leaves both at the same amount.
In other words, just because God is sovereign does not mean that agents are inactive or discounted; rather, God's sovereignty is the backdrop upon which the play of human and demonic history plays out. Compatibilism does not eliminate means, but rather it establishes means upon different grounds the the Arm.