the destroyers aiming their main batteries is atrocious, expect something like this: The K on the other hand, will not bother with that, will stay level and make full use of its weaponry, and will usually be just above, for maximal turret coverage. Bonus, they wil do a strange 'dance' moving up and down on the X and Y axes trying to fire their main batteries.
even if you bring your destroyers with move to position, near the K, so that the travel drive is not misuse, the destroyers AI is not able to deal with an advancing K, they will piss off their distance advantage and.they will try to turn around, very very slowly while being blasted by turret fire, and making for nice, tho expensive, wrecks.
After, they will try to turn around, very very slowly while being blasted by turret fire, and making for nice, tho expensive, wrecks if the K/I is at a distance and you select your 10 destroyer wing and order them to atack, they will misuse the travel drive and arrive right under the graviton turrets.