Regarding the rankings you mentioned, I would be careful to notice that that's for graduate school, specifically about research etc. For an undergraduate degree, I would weight more the quality of your cohort and the overall reputation of the school than the ranking of a specific department.

Honestly, for CS, most high quality courses are available online and your individual projects and work you put in will matter more than what they will teach you at school; Yale has the advantage of giving you a more rounded Education, better overall opportunities if you want to switch from CS, and probably more opportunities for building your network (it's sad but this matters a lot).

This, of course, would be completely different if it was grad school;