This is an app written and distributed by a component manufacturer. They will cut speed/processing power as much as they can to make the device use less battery. This inherently means the app will take control of the CPU/governor adjustments. A kernel such as KT with an app that LOCKS frequencies may prevent this, but also will render the app useless.
They aren't concerned with the same things as we in the rooting world are. We want to push as much processing power as possible while using the least amount of electrical power needed, not slow the device down while hoping ppl don't notice. Lol..
VZW Samsung Galaxy SIII(rooted/unlocked/rom'd)
Acer Iconia A500(V8 Bootloader/ Civato's Re-Flexx Rom)
Too many to mention(but all rooted since the D1)