Although this was just a single test that produced a solitary set of data points, it already confirmed a lot of theories.
"Commandeering doesn't work properly because the process of turning a mech pilot into a Knight is inherently a domineering act." Saint Commander Casella explained her theory on what had happened during her initial attempt. "Standard mech pilots can easily accept my influence because they are frankly not strong enough to resist my authority. They are completely willing and able to allow me to take control over them. They realize that the difference in strength is so high that there is no point in resisting."
"Ah." Melkor said in realization.