It's definitely a fair question.
They've both got some different things going for/against them. They're also both kind of frustratingly inconsistent.
The way i look at it, Pettersson has the higher "ceiling"...but when he's not dialed in, he's immensely irritating to watch, because you know he's capable of so much more. He's also much slower and weaker and has to rely far more on the right situations. In a funk, he's...bash your head against a wall annoying to watch. Just floats and goofs off and it's awful.
Stutzle even when he's not really dialed in, still has speed and that sort of stuff going for him. Even when he's not producing, it at least "seems" like he's move active. Not really that valuable when it doesn't amount to anything, and even at his best, he's just got less pure creativity and upside as an all-around play driver. He's also a bit of a turd when it comes to diving, which isn't great...but Petey legit falls over all the time for absolutely no reason too. It's not diving, it's just...he suck at staying on his feet because he's spindly and weak...and that's unlikely to ever completely change. He's just not built for it...whereas Stutzle is at least a pretty powerful, explosive guy, who is actually better at staying on his feet than he lets on probably.
So i want to lean Pettersson on "ceiling". But i'm not really sure...contracts included, there's a decent gulf between the two that makes me really question and go back and forth.