“Kung Fu Panda: Legendary Warriors” has its merits, as it is at times a charming brawler that young fans of the movie may be excited to play. There are non-licensed titles that do all of the good things “Kung Fu Panda” does (and better) out there though, so if your kid isn’t dying to revisit the world of Po and his pals once more, you are better off shopping elsewhere, especially since this sequel came so soon after the original hit shelves.