Those are all private colleges, while at public universities ECs are far less important.
There are a large number of very good public universities which barely, or do not, consider ECs at all.
I already wrote how my nephew was accepted to UCLA with weak ECs but top GPA and test scores.
UT Austin has automatic admissions for the top 6% of the graduating class at any Texas school.
At Purdue, GPA, Rigor, and Test Scores are “Very Important”, while ECs are “Important”.
At UIUC, GPA and Rigor are “Very Important”, while ECs are “Important”.
At U Washington, GPA, Rigor, and Essay are “Very Important”, while ECs are “important”
At Rutgers, GPA, Rigor and test scores are “Very Important”, while ECs are “important”.
At UMN, GPA, Rank, and Rigor are “very Important”, while ECs are “Considered”
At Pitt, GPA, Rigor, and Test Scores are “very Important”, while ECs are “Considered”
At UMD, GPA, Rigor, and Test Scores are “Very Important”, while ECs are “Considered”
There are, in fact, many public universities at which ECs are only “Considered”, while academics and testing are “Very Important”. Only at very few Publics are ECs “Very Important”.
Are these “as good” as T-20s? Depends on who you ask, for which type of kid, and for what major.