The base defenders stood no chance.
If the Larkinsons and their allies on the ground were only capable of fielding the twenty-eight mechs they managed to bring to the surface and retain, then Ves would have a lot more scruples of attacking this facility.
Even if Ves held a lot more confidence in the quality of his mechs and the skill of their pilots, fighting any battle while outnumbered two-to-one would definitely result in losses.
In a situation where every single mech and mech pilot counted, it was not responsible for him to aim so high.
Fortunately, the converted refugees solved his lack of power. Even if the hasty integration of biomechs to the lineup was anything but perfect, their strength was still real!
In the end, around 150 biomechs and in some cases regular mechs entered his ranks. With so much combat power at his disposal, Ves no longer needed to cower in his base!