On battlefields where Knight-class Star Destroyers appeared, the Duchy of Dawn's Fleet Commanders had to send some warships forward to hold them off—sometimes Hell Angel-class vessels, sometimes Kohl-class vessels. They also had to keep smaller warships as far away as possible from this super firepower monster equipped with a full 120 turrets.
Even that was far from enough, because the Knight-class Star Destroyer's incredibly sturdy shields also made it an extremely difficult target to destroy. To counter the Knight-class, the Duchy of Dawn's Fleet Commanders had no choice but to gather Calamity-class battlecruisers and use Particle Beam Lance bombardments against them.
But as an ultra-long-range strike weapon, using Particle Beam Lances against Knight-class Star Destroyers was itself a tremendous waste of firepower. It was like blowing all of your ADC's ultimates on the enemy top laner at the start of a team fight. Wasn't that a loss?
Thus, in the several battles involving Knight-class Star Destroyers, the Duchy of Dawn's small and medium-sized warships suffered far heavier losses than usual, all thanks to the rampaging Knight-class Star Destroyers.
Strictly speaking, just as Willix Blythex had assessed the Knight-class Star Destroyer, this model of Star Destroyer was undeniably powerful overall. But that power was built upon its enormous 1,600-meter hull and the gigantic SFS l-a2b ion reactor that occupied nearly one-fifth of its volume.
So while the Knight-class Star Destroyer might have cut an imposing figure on the battlefield, a closer look showed that, with its broad, thick, three-dimensional triangular shape, its 1,600-meter-long hull had a total volume more than twice that of the Hell-Angel Class Battlecruiser, which was over 1,100 meters long!
Under such circumstances, if it still could not gain an absolute advantage on the battlefield, then the evaluation of this type of warship was obvious.
Willix Blythex's assessment