The article reveals that expensive elite universities provide the best return on investment. Also, engineering schools tend to provide better return on investment than liberal arts schools. Thus we see that MIT and Caltech are #1 and #2, while Harvard, where few people major in engineering, is only #3.
But these numbers can be deceptive when comparing schools. Nearly all the students at MIT are majoring in something that we assume to have pecuniary value, while a significant percentage of Harvard students are majoring in stuff for which there is no career track such as social studies, psychology, English, and history (see chart). And the second most popular Harvard major, Government, has a career track, but not one that is especially high-paying. Harvard economics majors who seek jobs in financial services probably pwn MIT graduates. Harvard also has a 98% graduation rate while engineering schools have much lower graduation rates, another benefit of Harvard.
My conclusion is that the best school to go to is Harvard. I would also recommend that young people considering engineering as a major go to an Ivy League school and not an engineering school. The engineering majors at the Ivies are the easiest to get accepted to, but they carry a lot more prestige with non-engineering people than a degree from Harvey Mudd.