Hello StaticPressure,
yes, the performance is better than the Katana 3rd In addition, a larger area cools, while the fan is pleasantly quiet.
Katana 3 - max. 55.55 CFM / max 31.07 dBA
Grand Kama Cross - max. 69.93 CFM / 24.7 dBA
More air flow and quieter for sure. Next week i think, i will do make a new Dimensions and Compatibility thread for it