@1st
@Weekly
(EDIT) This one's on me. But that also means she uses as little Semblance as possible. That doesn't mean after all that Pyrrha can back flip while casually tossing around those gears when she struggled so hard and had to focus. It's easier to move your body slightly than it is to move giant things. Just basic logic.
Alright, if this does work, you're running the issue of "When will Pyrrha accurately time her magnetism" so that when Sweet Tooth is transforming, she manages to stop him. Cause either she stops him while it's in car mode, which can still bombard her, or on bot mode. The margin of timing magnetism especially considering the range issue, is very narrow. So it's very unlikely that she could pull this off at the first try. And Sweet Tooth has very little reason to turn his car from mecha to car quickly.
The only mental breakdown she had is having to face numerous spears and in fact made her go 1000% and deflect all those. And the only thing that broke down is that poor angel Penny. Her having a breakdown didn't seem to weaken her, more like make her go all out really.
Provide me evidence that Pyrrha can accurately stop every single intricate gear instead of just "holding" "pushing" and "pulling" in a wide range, that is not just some of Penny's blades being thrown at her considering that's the only other tier level close to her that she used magnetism on. And even then I'm confident on saying Pyrrha only gets that tier due to scaling to Pyrrha considering that's what it literally says.
@2nd
You missed my point. And that makes it worse.
https://youtu.be/Uk2yrQpkmHg?t=117 Timestamp, 1:57
That doesn't look like 450 meters or close to it. Pyrrha couldn't grab her blade anymore. Her weapons could be deflected from her. Her senses doesn't mean she can avoid all shrapnel perfectly. And everytime she used magnetism she was distracted by a follow up attack.
The range from her full unleash of her poewrs, something that would've caught all those attacks, did not even affect Penny. Someone metallic. If she truly unleashed all her force with her Semblance there, she would've blown away Penny too alongside those blades into the forcefield. It doesn't matter if she wouldn't have been blown away to a farther distance or not. Penny was not blown away at all. Which further puts question on the effectivity of said ability and provides 2 cases.
Case 1 - The range of magnetism is very very limited. The likeliest case considering it should've at least affected Penny's position slightly instead of cut her up with wires.
Case 2 - The range is great, but you vastly overestimate the power of her force. This is the unlikeliest case considering the special effect of her Semblance only affected the blades.
@3rd
And when has Pyrrha ever instantly used magnetism to defeat an enemy? It certainly helps that the enemy is a car. But what's exactly stopping Sweet Tooth from shooting out numerous other weapons while she's in place? Has Pyrrha ever dealt with a situation where a car is a combatant that can shoot out multiple enemies? Or is it more likely that the car would run her over first? Does she know it can turn to a Mecha?
Will she always pick the optimal action in this battle?
The chances are, no. She won't be able to. This is a new enemy. Can she deal with the attacks? Yes. Can she deal with all the attacks while he's trying to run her over or crush her in its mecha form? Maybe. Can she do all of that while he uses power ups that are temporary but if used properly can turn the tide of a battle? That's the part where I give up and say yeah she's not gonna pull through.
So in conclusion.
I believe Pyrrha loses here sadly. There's just too many surprise tricks here and frankly she does need to be focused to push anything with force that isn't as light as a blade.
But hey, beats becoming ash. She might get a cool treat by the end of this.