Agreed that Juri’s wakeup is bad, especially against Seth. If Seth gets two knockdowns, it’s pretty much his round. Juri can’t antiair Seth’s divekick with her normals very well either - trading is in her favor, but often she gets beat clean and then loses half her life.
I don’t agree that her health/stun are terrible. They’re both 950, just one step below average. Seth doesn’t care how much stun you have though, he can dizzy anyone.
Juri is a zoner. She can do good burst damage, but she’s not a rushdown character. Her counter comes out in 3 frames (normal versions) or 1 frame (EX). EX Pinwheel is 7 frame startup, full invul through frame 6, so it trades a lot if used as a reversal. It’s completely projectile invincible, throw invincible for most of its duration too. Its real use is to dish out the damage. A simple jf.MP, cl.HP, EX pinwheel combo is… 294 damage, I believe. That’s 36% of Seth’s life.
Juri has a couple 3 frame startup normals, most of her normals are cancellable, and fireball store is -1 on block. Pinwheels are all unsafe on block, you can just SPD her. Pretty much the same with her divekick, it can be -2 if you space the LK version perfectly, but in a match - not happening.
Anyway, ultra 2 is the one Juri tends to use against Seth, because a) kill that guy asap, b) antiair vs divekick and neutral jump, and c) trying to rush Seth down with ultra 1 is basically suicide. But keep this in mind: if Juri is storing a fireball, she can’t use raw U2. I tend to keep a high fireball stored because it’s safer for antiair. It’s hard to antiair his divekick with jf.MP consistently to go into U2.
As Seth against Juri, forget about zoning. If you throw a boom then follow it in and mix her up. Basically just go crazy. Divekick all you want. I just played a Seth online who looked like his stick was stuck in up-forward and it was a struggle. If she antiairs you with cr.HP it’s 100 damage, with a fireball it’s 50 damage. So it would take 9 or 10 cr.HPs to kill you, or 18-20 fireballs. I’m pretty good about the fireball antiair and using counter to gtfo, but eventually the Juri player is going to mess up. Knock her down and make her guess every time. The odds are in Seth’s favor here.