I think that's hogwash. Every school wants to recruit the best students they can, so if they appeal to Penn, they'll get an invite. And like all schools, I'm sure they offer admission to more than they can seat, knowing some will decline, so interview slots are not "wasted."
Disingenous to be angry with Penn because they ignored you, propose it's because they don't like Cornell students, and then admit that your stats (GRE) are too low anyway.
And c'mon, again, like so many schools, Penn has literally hundreds & hundreds of "SUPER WOMEN" from which to choose. There are a number of eminently qualified candidates who just don't get chosen by a particular school, and it's no poor reflection on them. It's just that out of what, 1400 candidates? there's bound to be lots of excellent candidates that don't get interviews.