Easy dude california rolls and art of Phoenix too easy foo. At least laws dragon sign stance is pretty complex todo.
DSS isn't "that" essential to Law's game play though, then the point behind thw moves he already has for the player, even for beginners. It's like Hwoarang's Just Frame Sky Rocket; it's definitely useful but it is a bonus if the llayer knows how (and when) to do it. The Xiaoyu player on the other hand has to be able to break through turtles because she normally has a rough time with them, thus she has to rely on her stance mixups and her okizeme to get work done. The buffs she gotten in T7 augmented her abilities to make her viable in tourmanents (and I would also hope that other characters currently lower on the tier lisr would get some buffs as well). Trying to play Xiaoyu without the stances and her setups is like trying to play a Mishima without Wave Dash mixups and EWGF. You cannot do that. And, recommending these kind of characters to beginners is a good way to screw the said players over on really learning the game. And, who exactly are you to tell ME how Xiaoyu plays?
Also, Devil Jin has be b4. Not b3. And, Xiaoyu evade b4 even while in AOP, depending on how quick and smart the the Xiaoyu player is. As Devil Jin, you can poke around more at distance and try to wait for Xiaoyu to whiff something back or to put her at a disadvantage at wall. The idea as a Mishima (or any character) is to prevent the opponent from attempt AOP or to turtle them out.
As for universal options, every character in the game can KBD. Every character in the game can side step. Everybody has the same options as far as the real game mechanics go. DSS is a concept that is exclusive to Law. AOP, Mistrust, and Hypnosis are elements that are crucial and are exclusive to Xiaoyu (and you cannot play Xiaoyu without those stances, unless you hate winning or you find something wrong with... winning your matches. EWGF (or EWHF if you are a regular Jin player) is a must have for a Mishima and EVERY player who wants to utilize those characters HAS to do those things. There is a big difference between character-specifics and universal game play mechanics. Note; some characters have a slight better SS than others. Some characters have shorter or further distances on their regular back dashes (hence why you use KBD in the first place). There is also a matter of whether or not the characters will "need" those moves. For example; you play Hwoarang withoit a Jusy Frame Sky Rocket. But, you can't play Steve Fox without knowing how to use f3 stance transitions or Peakaboo for example. If you think some one like Xiaoyu or Nina for example are "easy" to play, then... good luck proving it. Really.
And , that's Great Dark Hero to you. Not "dark side hero."