The fact that it goes over your head is....unfortunate. I will try one more time for you and if you dont get it you can join those Chiefs fans who just want to gargle Patty Mahomes, I dont care much; was looking for honest reasoning but that's long gone.
People react differently to the same weather. You can also become conditioned to weather over time. I live in the Northeast--when friends/family visit from the South they will be bundled up in coats and scarves for 50 degree weather. They just aren't used to it. 50 degrees for those used to 10-20 degree days is nothing. We wear shorts. They can't fathom it. Just like Minnesotans laugh at 15 degrees. They deal with -20 like its nothing. A person can be conditioned to environments. Kids in Russia play in water in negative degrees, kids in Mexico doing that would go into shock.
You simplifying it down to Person A and Person B are affected in the same exact way in a certain environment is not physiologically accurate. At all.
I will question the ability for a kid who grew up in Texas, who hasnt played in a game under 26 degrees and wonder how he will hold up to -10 degree weather. How it can impact his mechanics. How the hits will hurt far worse. How it can affect his psyche. He's a damn good player and very confident, calm...he could excel. He might not. We haven't seen it. Fan boys are trying to play it off, but -10 is extreme conditions and nobody has seen him play in these in his career (at least not that has been mentioned). Brady others here have questioned, but his background lends itself towards someone who can perform in these conditions and has. It's been a while, but in my opinion he would be less affected given his track record and conditioning for this weather.
I'm not worried about how it affects Hill or really any non-QB. I don't think overall it will skew the game enough unless it gets to Mahomes. Which is a total unknown.