I’m very familiar with common data sets and they don’t have the information I asked for. I’ve used the “What are my chances?” tools and they’re not very useful or accurate. I know the 25/75th percentiles for MIT and that’s also not what I requested. The CDSs also don’t say what extracurriculars they value or the different majors’ entrance requirements.
Unsolicited advice - you could have just said, “The common data sets have a lot of great information” and you wouldn’t come across as a condescending know-it-all.