I know (for a fact) that some of the honors students at RU are just as smart as kids who attend Princeton or other Ivy's. For one thing, most, if not all, the Ivy's get far more "perfect" applications than they can ever accept. And they don't just accept students with perfect applications. So the kids who don't get accepted go elsewhere, including to RU.
Also, being "smart" is a bit of an ambiguous concept. Are we talking IQ? GPA? Accomplishment? All the above? Some kids don't come close to realizing their potential in HS but thrive in college. RU will have it's share of such kids, just like pretty much every other school out there.
And sure, some students in Ivy league schools will go through a period of laziness and partying. But that doesn't mean they aren't capable of a 4.0 at RU, which is what the post I responded to was implying. The vast majority of the students who are accepted into Princeton, or other Ivy's, could probably get 3.5s or higher at RU (or just about any other schools) in whatever area of study they've chosen, all else being equal. Just getting into those schools, which is the hardest part, generally indicates an unusually high level of capability and discipline and a fairly high level of raw intelligence.