<p>How do the rankings differ? which ones are generally trusted more? (or are they trusted more by different sources/people?)</p>
<p>The NRC was probably more reliable than USNews at the time of its publication. The problem with the NRC is that it's quite old, having been published 12 years ago. A new NRC ranking is supposed to come out shortly, but until it does, we are left with only the old one.</p>