Geten's AP scales to 163 Tons of TNT and Aldrich's scales to 171 Tons of TNT. They're basically even.
Geten should scale to Mount Lady's durability for injuring her, which is 214 Tons of TNT. But regardless the difference isn't noticeable and are basically even.
Right now it looks like Geten win this easily.
Looking at Aldrich's profile, I don't see anything that'll let him land a hit on Geten. As per SBA the fight starts at the highest range, so they'll start hundreds of meters away from each other. Which is good for Geten since he's a glass cannon and starting up close gets him one shotted by Aldrich.
But in Deika City with his ice, he should be able to overwhelm Aldrich with the sheer
size and
volume of his attacks. Aldrich's range with fire breath is only Tens of meters, meaning Geten can safety attack from outside of his range. Along with flying high up in the sky where he can't reach him.
His superior martial arts skills aren't going to be helpful since he won't be getting close.
I'll hold off on voting though, as I'd like to hear from MCU supporters. But going off the profiles alone, I don't see anyway for Aldrich to even reach Geten, who's going to be flying high up in the sky and out of his reach. While he can rain down ice attacks without any worry.