To many characters have a way to change their jump, like a dive kick. So when you AA, you need to know what they’re doing and react to it. Try using ultra 1 as AA vs. another Ryu. If he hasn’t committed to an attack yet, he’ll just mash tatsu and you’ll miss. And if he has committed, you’re to late to do ultra 1 and hit him. Use s.hk, c.hp, and dps to anti air. Or Ultra 2. See, Ultra 2 works better, because the space it covers will cover multiple options a character has. Say Yun jumps at you from midscreen. You ultra 2 to AA, and he does a late dive kick to screw up your AA timing. The dive kick will keep him in the air longer, so you won’t get the full animation you would have if he did a normal jump, but you still get him with the non animation part of the ultra. Like others have said. Other options are just safer.