Last time I checked, the Principles of Micro at MIT and Econ 100 at UChicago had the same content. One runs for a semester, the other for a quarter. Things might be a bit different on the STEM side but it’s not at all unusual for the non-STEM to be faster paced at UChicago.
Incidentally, just looked into what was allowed for the Hass concentration in economics and you can take Principles of Micro (no pre-req), Principles of Macro (no pre-req) and Micro Theory (pre-req = Calc II and Principles of Micro). That’s pretty standard and it will typically take three semesters. The same content will be taught at UChicago in three quarters, just as an FYI, but of course not as a general (frankly, not as a major either; UChicago doesn’t count “Principles” in the major although they highly recommend that you take it anyway). This isn’t to slam MIT which has one of the best (if not THE BEST) economics departments in the world. Just pointing out some of the aspects of the undergraduate version, which is pretty much like undergraduate Econ programs at all top schools (most of which run on semesters so are a bit slower-paced). This is also consistent with what I’ve heard from other MIT parents whose kids took an Econ course - and kids who took Econ at other top schools. They are all pretty much taught the same way. I do admit to being a tad surprised that MIT doesn’t start them by taking the partial derivative but maybe they do in more advanced courses.
And, as mentioned already, UChicago’s Sosc sequence doesn’t allow you to stray from the designated sequences, must be taken in order, and - along with six other courses mostly in mandated sequence - is writing intensive. So relatively inflexible compared to MIT’s HASS requirements.