The "Unanswered" does default to sorting that way, so you'll see who's been waiting the longest there.

It does not default to sorting that way. See the screenshot here: http://imgur.com/4AkXTzD. You can see that 3 days ago is interspersed with 4 days ago.

It doesn't necessarily sort that way. If you've just submitted a project or an evaluation and it gives you a link to go evaluate another project, it almost always brings you to a project submitted within the last few hours, even though there are clearly projects that have been waiting for days. It's annoying to keep having to go back to the Unanswered page, and it's not really fair to the people who have been waiting for longer.