I just have to take issue the the op assertion that a MC80L is a bad ship because it can't go toe to toe with an ISD. An ISD II is 120 points. A MC80 battle cruiser is 103 points. I just don't get why something's ability to destroy (arguably the most difficult ship to kill in the game) an ISD is it measuring stick for the quality of a ship.
That being said, as an Imperial player ISD's can feel very fragile against an MC80 with a couple of good support support ships.