These are all private schools with single digit acceptance rates…
As a public university, Tech has a different mission. It’s much more similar to UIUC, Purdue, UCLA, and UC-Berkeley. While I’m sure they do look at STEM EC’s, they have to cast a much wider net (especially with in-state students) than the super selective privates.
Also, while a lot of schools have moved to holistic admissions, they all don’t put the same amount of importance on academic factors, as they do nonacademic factors. Comparing two schools, is often an apples to oranges comparison.