Iroha is a powerful magical girl with a lot of different abilities up her sleeve. The problem is that none of them are powerful enough to damage Psykos. For now lets ignore the fact that Psykos has a power up which multiplies her abilities exponentially. Even without that she would be able to utterly crush Iroha with ease. A single good energy blast would end this fight. Iroha has shown in the past that she is quite agile but she doesn’t have enough stamina to keep it up for very long and her magic power drains rather quickly. Psykos wins.