There is so little difference overall it seems.

1.

I really wish there was more research done on mental efficacy or torque.

Processing vs prioritization.

Some of the highest IQ people that have ever lived have gotten nerd sniped by ruminating on esoterica like "how many angels fit on the head of a pin".

Humans really are a multi factorial random walk.

Hey, you're really smart and also you're going to spend your entire life solely cataloging every cultural reference and trope from Adam West's batman.

2.

In the above scenario some smart people would feel very fulfilled by their categorizing efforts and some despair.

3.

Self reported happiness? I've known smart people who are as eore as idiots I've known. The smart people were equally happy/unhappy but expierenced measurably less physical suffering and had, by all observable measures, better lives. They wouldn't trade their life for the idiots life at all.