There is no difference. Don Chaka is just a sub title in some releases.
In the website in the related links section, a woman who weighs 130 pounds decided to track the amount of Calories burned by playing on the wii fit. Different games burn calories at different rates, and also depending on how much the player weighs. The order of intensity of the games played, from most to least was:Dance Dance Revolution Hottest Party 2Don King BoxingAll Star Cheer SquadTennisWe Ski(Equal 5th) Ski and Shoot(Equal 5th) YogaGold's gym Cardio workout(Equal 8th) Jillian Michaels Fitness UltimatumBaseballEA Sports ActiveSkate ItGolfBowling