@Penn95, i think it’s proper to consider what exactly a ranking is attempting to rank.
Harvard, Stanford and MIT might top Princeton and Yale in international rankings and prestige, but those rankings are for the total university – not just undergrad – and consider grad school rep, research spending, and other variables that have little-to-nothing to do with the quality of undergraduate academics.
The (main/most famous) USNews ranking, on the other hand, is focused on only the undergraduate level… or so we are told, anyway.
If i want to know about the top schools overall – undergrad, grad/PhD, research, etc. – i do look at the international rankings like Times and ARWU. But if I want more focus on the undergrad experience, I look at rankings that focus solely on that level, like USNews. I would include Forbes’ ranking, but i’m not a huge fan of using ROI to rank academic quality, given known self-selection and other issues.