Star Wars Rebellion/YMMV


 * Game Breaker: The Bulwark-class battlecruiser and TIE Defender are the two main examples. Early on, the Alliance Escort Carrier is a good example too.
 * That One Level: Several.
 * Capturing Vader or Luke can be this because they have insanely high Combat statistics that only get higher with time.
 * Also, if you're a Rebel, any battle in the shadow of a Death Star, complete with Death Star shields, and a pretty sizable fleet -- with a lot of TIE Defenders, of course -- and Interdictors. Yeah, you can say good-bye to that fleet. If it's all around Coruscant, you need to do it to win the game.