Yes, yes, yes!!! The issue here is you are taking the data as gospel, and I think USNWR made a mistake. NYU would not give them bad info. Cornell's no-debt policy is a far cry from free tuition for all. Do you know anyone, other than people coming from the least affluent families, who think their EFC accurately reflects their ability to pay? Cornell's policy is more generous than many, but still does nothing for a large part of their admitted applicant pool.
Honestly, is there a way to find out how many MD-PhDs are admitted? If it's around 50, I am pretty sure we have our answer. If not, everyone on the NYU thread has been laboring under a misconception for the past two years, and NYU is actually 33% easier to get into than anyone realized.
By the way, I 1,000,000% agree with you about random SDN data. But, I give some weight to posts coming directly from adcoms who identify themselves (not even the well known, highly respected anonymous ones), as well as multiple people quoting the exact same information as coming directly from an identified person in a position to know.