One thing many forget is distegrators have no RIGs for them like all the other turrets and missile launchers do. Plus with any turret mods it only gains half as falloff bonuses have no effect on them.
What damage mods you can from RIGs and Skill implants can provide massive bonuses to weapons, and you have ability implant slots free for better implants for shield/armour/targeting/etc… While implanting Mimesis you only gain max damage bonus and a decreased cycle damage increase.
So saying memesis is over powering Disintegrators is very short sighted.