<p>Twinkle is great, but posts referencing stats not specific to Arts & Sciences college, and rankings relating entirely to graduate school (and also not just CAS), may not be highly dispositive as to what your experience need be, intending to study mostly theory as an undergrad at either institution. Certainly undergrads at Cornell can and do go on to top programs subsequently. A deeper level of investigation would probably be warrranted, to determine any actual material differences to you. Best to go there & talk to people in the departments. Possibly the presence of a mandatory core curriculum, vs. more conventional set of distribution requirements, might be a greater, real distinction, from an academic perspective.</p>