RPI is a not a good measurement tool. You may indeed have the better resume to the naked eye, but that doesn't really matter.
The "tougher sos, better record" comment is the answer, but the dickishness of the response is unwarranted. You're assuming salag knows the RPI formula. If he did, I'm positive he wouldn't have asked the question. I think most people think RPI is a good metric. It certainly sucks in real life, but it's even worse in HD, where it can be manipulated by playing good sims.