As usual, EGOL is right.
Use OSE to query 10-20 of your competitor domains. Realize that the OSE tool is one of the most accurate juicy link finders, without it you would have to prioritize competitor back links by hand. With it, you are able to target the best links your competitors have with minimal effort. These are the high quality back links.
You are right, your direct competitors have weaker link profiles, so try to run it on some of the non-direct competitors, those ranking well across the board (Google.co.uk, .in, .ca, etc)
URLS to Check out their Back Link Profiles on (in OSE):
www.wirelessguide.org/plan/prepaid.htm
<cite>www.assurancewireless.com</cite>
You may want to brush up on those ranking factors and what is important to the search engines themselves and remember, there is no "code" to back linking, and you find high quality back links in the strangest of places, so just keep looking! It's never done.
Domain age is a big factor, one that Moz might not tell you is the reason you are outranked by domains with less link equity and poorer on-site SEO. Domain age of root-domain links as well. But, heck, even registrar info and terms for domain registration matters to Google. So trying to pinpoint why (beyond a scientific analysis) is overkill, and your time is better spent building links, high quality resources, and partners/friends within your vertical.