Smack Studio / Queen
Queen is always the one controlling the pace of the match... just in different ways. With her throne, Queen has access to a wide array of tools to zone out the opponent. Homing projectiles, explosions, and other long range attacks all allow Queen to control the stage like no one else. If she were to lose that throne however, these tools may be lost...
Once Queen reaches 100%, her throne is destroyed and she is forced into a weak runaway playstyle in which many of her moves are completely disabled. The moves she does have are considerably weaker than normal, though they are also quite fast. This generally forces Chairless form to be a sort of last-ditch-effort attempt to take a stock. Her defense is considerably weaker in this state, so she will likely die soon after.
This goes without saying but when playing as Queen you will generally want to... avoid damage. Queen is heavily punished for letting an opponent through her zoning, and ending up in Chairless Form is a near death sentence. Zone well, and the match will be yours.