until you cross the threshold of basic load cube x caliber/capability to enter the realm of diminishing returns and you'll accomplish little; they can still be easily killed and will not be able to kill everything they may meet. We got it wrong with the Brad. The CV 90, while the best of breed currently available still, IMO, is of the wrong breed. For success in combat and survivability of your troops, there are only four critical factors to consider :

Agility, speed, unrefueled range and employment.