Well, yeah, I think we're kind of saying the same thing. The top performers at all schools, public or private, T10 or T500, are apples to apples.
What makes the true top schools special is that a decent portion of all of their applicants are top performers. That's how, with a little massaging, they get to 80%+ acceptance rates. Top public schools don't get close, because they are so large, and because their applicant pools mirror the country at large, with a few top performers, a lot of average perfomers, and plenty of poor performers. This is why their numbers, even with massaging, aren't that much above the national averages.
What schools have nearly 1,000 people applying? I count 3 in the entire country at 1,000+, and only another 2 are above 800! That's 5 schools out of how many thousand?
Hopkins had 568 applicants last year. No public school in the country, including UT-Austin, UCLA, Berkeley, Michigan, etc., comes close to its acceptance rate, grade deflation and all.