I agree that it's much more likely for a math geek to develop serious knowledge of lit-crit than it is for a lit-crit type to develop serious knowledge of math.

I agree that it's much more likely for a math geek to develop serious knowledge of lit-crit than it is for a lit-crit type to develop serious knowledge of math. That's the something that there is to what you're saying. However, being that either scenario is astonishingly rare and unlikely, I just don't see that as a good argument for asserting any kind of superiority of STEM culture over humanities culture. And when, astonishingly rarely, that does happen, I suspect the human in question doesn't see themselves as primarily STEM or primarily humanities, but just, you know, curious about stuff. Knowledge-hungry, culture-hungry, and screw the tags.