The Star Trek mirror universe federation is at least as bad as Star Wars' Empire

Con wants to take into account the destructive capabilities of the two empires; so here is what the terran empire can do.The Terran Empire's main ship for enslaving and destroying civilizations is the constitution class. This is the section from memory alpha describing the constitution class' weapon capabilities: "during the early 2250s, Constitution-class heavy cruisers were armed with a complement of directed energy weapons, that possessed enough power to destroy half a continent in a concentrated bombardment. In addition, these vessels carried on board laser cannons, capable of operating on energy fed remotely from the ship.""By 2266, phaser banks were standard complement aboard this class of ship. A bank actually consisted of a single emitter and its power supply, though it was common practice to fire two banks at a time and refer to it as a single firing.""Ship-mounted phaser banks had a range of approximately 90,000 kilometers, and like hand phasers, were capable of being adjusted to stun, heat, or disintegrate targets, including objects or beings in space or on a planets surface at a focus ranging from narrow to wide beam. When only motion sensor readings are available, the ships phasers could be set for proximity blast and bracket the approximate coordinates of the target.""The Constitution-class originally mounted six forward torpedo tubes and an aft tube for launching photon torpedoes. The forward tubes were located in the same area as the forward phaser banks. The tube covering the aft firing arc launched torpedoes from the end of the secondary hull. This combined arsenal was powerful enough to destroy the entire surface of a planet."So the Terran Empires planet war ship has a firing range of 90,000 kilometers; much greater than the star destroyers or the death star in star wars; giving it additional safety when dominating a planet. Then they also have the ability to destroy the ENTIRE SURFACE of a planet; the same destructive capability of a star destroyer but on 1/66 the size. That smaller size makes it much harder to hit because of a smaller cross-sectional area and makes it more maneuverable than star destroyers.Another factor to take into consideration when determining the threat to a world is shields. That's because you can have the most powerful ship in the galaxy but if you have no shields it can be attacked and destroyed quite easily reducing the risk. This is the strength of the constitution class' shields according to memory alpha: "A Constitution-class star ship's shields could take the equivalent of ninety photon torpedoes at once." A photon torpedo has a warhead made of 1.5 kilograms of matter and 1.5 kilograms of antimatter. When it i detonated that creates an explosion of 64 megatons. The shields can take 90 at once so that gives a total strength of 5.76 GIGATONS. From that the shield strength can be rated at: 24099.84 petajoules. To put that into perspective; largest bomb ever detonated; the tsar bomb; had a yield of 50 megatons. So we could say that the shields can take the equivalent of 114.76 tsar bombs. For reference of how much destruction 1 tsar bomb can cause here's a picture from wikipedia: This picture shows the size of the total destruction zone transposed on a map of Paris.Now imagine this times 114; then you get an idea of how much energy the shields can handle.CONCLUSIONWith the Terran empire being able to destroy the entire surface of a planet, they are a grave threat. At least as grave as the Empire since it is more maneuverable, harder to hit, and incredibly difficult to destroy. Unlike the Empire's ultimate weapon; the death star which has a flaw so terrible that a fighter craft can get through the shields and destroy it; the Terran Empire's main ships are shielded and constructed in such a way that fighter craft can't get in close to destroy it and it doesn't have an exhaust port that leads directly to the power core. The Terran empires ships shields unlike star destroyers cannot be taken out by kamikaze attacks. Since it has less weaknesses, a lot of power, and maneuverability than Star Wars ships it presents a threat to worlds as great or possibly greater than the Empire.