The main fight most definitely centered around defeating the large amounts of mechs and defensive installations within the Pima Prime System.
However, defeating the strongest mechs of the Sundered Phalanx also played a crucial role in Operation Saturday Market!
The Hex Federation would have never agreed to target a star system as valuable as Pima Prime if not for the fact that the Golden Skull Alliance was willing to lend its complete support.
To be more precise, the participation of Patriarch Reginald Cross and his powerful Mars was the greatest factor that made this offensive operation viable!
While the Cross Patriarch had already committed to defeating or at least stalling the Gauge Dynasty's ace mech, there were still a lot of enemy expert mechs that needed to be taken care of. Each of them were more powerful enough to fell over a thousand mechs during a single deployment if left unchecked!