Well, I don't ask anyone else about how much their debt load is but assuming most people have similar financial scenarios, as far as minimal outside contribution (your parents etc), this is misleading. I'm gonna go out on a limb and say most people are in a similar situation to myself, and have average debt of $200k or more.
Second part of your question, the discrepancy is likely because WWAMI states are factored in.. Wyoming pays substantially less for tuition (and have a minimum 5 year mandatory repayment as a result). At least this is what I have heard. This is once example, not sure what the other WWAMI states pay