[casion]

You aren't wrong, but there's a nuance that I was trying to clarify on.

Regarding the idea that you rarely see trades of uneven values: that is largely because positions where such complications are likely tend to be avoided by most players. There are notable examples of players that make/made such trades disproportionately often. Morozevich, Tal, Shirov, Tate, Shabalov, Speelman, etc..

Playing in that manner is largely unusual because it is mentally fatiguing, risky and easily avoided with modern theory.