Bring mixed marinades to boil. Set aside until cool. Pour into large bowl of duck legs and marinate for 3 hours.
Place aluminum foil on top of a baking pan. Arrange duck legs with skin faced down. Put into a preheated 360℉ oven and bake for 40 minutes. Remove from oven and rotate duck legs with skin faced up. Bake for another 20 minutes. Remove from oven and dish up. Stir in appropriate amount of wasabi to remaining duck sauce and mix well as dipping sauce. Ready to serve.