The only limitation to Frank Paul's power was that he could not control objects that he hadn't been touching, and he had a limited amount of mana that restricted how much he could do with his abilities. If not for these constraints, he might have been able to reach EPIC Rank already.
Frank ignored the directive from the military telling him to go to City S since he was not a soldier and made it his duty to protect his city. As far as Frank was concerned, he didn't care what happened to th rest of the country, so long as his city was still standing. Let the other superhumans handle the remaining anima.