@Boothie007 We will agree to disagree then. The peer assessment scores do not show any significant insight especially at such small differences. There is no objective measure and general perception that would lead someone to say that Penn is below Columbia or Chicago. it is not overconfidence just taking all the facts about desirability, choice, outcomes and intangible perceptions out there rather than relying on a highly subjective number. If Penn was truly below Columbia or Chicago you would see people choosing Columbia, Chicago consistently and significantly more over Penn much like people choose HYPSM in significant numbers over Columbia, Penn, Chicago. Columbia, Chicago would have much better names domestically and internationally than penn much like HYPSM have much stronger names than CPC. But this is not the case.
Also Caltech is very often considered along with HYPSM and certainly above Columbia, Penn or Chicago in general perception, thus I think it hovers between tier 1 and 2.