We keep comparing Yhwach to characters Wayyyyyyy weaker than himself, if his best achievements are besting
Country level characters, than that's irrelevant next to Pyra. It's like saying Mario would beat Pre-Crises Superman because he stepped on a Goomba.
Yhwach sees the future by glaring at his opponent to see any possibilities the character can do. But he does NOT see an infinite number of possibilities. "Predicting Ichibe's death from 1000 years away" seems like non combat applicable Clairvoyance. Plus, Yhwach still has a lot of serious weaknesses with the Almighty. He's so egotistical to a fault,
this is basically Yhwach's character in a nut shell.
Anyway, that's Yhwach not Aizen. Kind of need to pay attention to the videos; I linked 3 of them. Anyway, Numbersguy should know better than I since I'm still early on Xenoblade 2 doing overloads of sidequests. Anyway, the fight with Rex & Pyra against Jin still takes place in time stop. Not even light was able to move in that instance.
I already explained her answer to it, if Pyra stops time before Aizen uses his Kyoka Suigetsu, then he's an obvious spot on target and Pyra could just blitz him to death. And even after KS, AS still has ranged scanners that know where Aizen is. KS still isn't effecting giant Robots. It can still destroy Aizen even while Pyra's unconscious.
Binding Hadou's don't work on Pyra, she's dealt with all sorts of enemies who do pretty much the same thing. She could either equip an armor that resists binding, use an item from her inventory, or just have AS heal her. Also, the lasers from AS also heal Pyra, you didn't give a good counter to that. It gives her full health, drastically increases her statistics, cures all status effects, grants her "Immunity" (Actually great resistance) to a wide variety of statuses. That also includes statuses like mind control, confusion, binding, dazing, blindness, ect. And can do all of that while simultaneously obliterate Pyra and Rex's enemies in a massive AoE.