Yes, I agree that perfect numbers aren't the typical student that SIPA looks for, BUT I do think that for someone who is younger and is recently out of undergrad, numbers would probably weigh higher than for someone, say, three to five yrs. out of undergrad and with obviously more professional experience. For the latter group, numbers probably weigh less, and the admissions people may be more holistic.
This is my quandary: I feel my numbers are solid but I just finished undergrad two years ago and fear that for an MIA my work exp. is certainly my weakness compared to, say, the avg. SIPA or MIA student. That said, I always thought I had a decent shot at getting in cause I have strong quantitative (economics major with plenty of science and mathematics) and intl. living and travel to balance things out. But competition is precisely what it is because there are tons of people who would be similarly qualified, and who knows what exactly the admissions people weigh and consider?
I just wish I'd get some sort of timeline on when the 2nd rnd. would go out.