He wasn't sure whether to call her the Control Devil or simply Makima. If the Control Devil had already come to the Human World, she probably already had the name Makima.
Curious whether the Control Devil had actually come to the Human World yet, Asaba Kotone immediately checked the Catalogue.
The Catalogue told him that the Control Devil had already arrived in the Human World and was in the Soviet Union.
The Control Devil's ability allowed her to control beings she considered beneath her, but it wasn't entirely subjective. (It is necessary to explain Makima's ability properly, because there is far too much debate about it.)
It was a little complicated to explain. The Control Devil could control others based on her own judgment, but she wasn't blindly overconfident.
For instance, when it came to Pochita, the Control Devil believed she had to defeat Pochita before she could control him, rather than simply deciding she could control him.
In short, her ability might allow for blind overconfidence, but her rationality ensured she wouldn't act that way.
Otherwise, she would have been invincible, beating up Pochita and stomping on the Darkness Devil. She wouldn't have been spawn-camped and instantly killed by the Darkness Devil the moment she returned to Hell.
The War Devil's ability actually had a similar characteristic: blindly overconfident, but not entirely. She believed one million yen could buy an aquarium and let her turn it into a weapon. Strictly speaking, the aquarium's profits for a single day exceeded that amount, yet War really could turn it into a weapon.
If she thought one million yen could buy it, then it could. Once it became hers, she could turn it into a weapon. But she couldn't buy it without paying anything; she had to spend at least some money.