Welcome to the Q&A Forum

Hi Melinda, I'd like to recommend Validately. We specialize in remote moderated and unmoderated user research. Our plans start as low as $199/month. Validately gives you the flexibility to test anything from live websites to prototypes on mobile and desktop. In one platform you can record videos, take notes, create and share clips, and view analytics. There's no cost to use your own testers. You can collect unlimited responses for each test. We offer custom recruiting services that start at $10 per response for unmoderated and $50 per response for remote moderated. We'll never ask you to reveal your clients. Validately is used and trusted by over 1,000 companies, including Google, Salesforce, American Express, Allstate, and many more. If you're interested in learning more, feel free to contact me at jeff@validately.com. I'd be happy to schedule a demo of our platform. Jeff http://www.validately.com

I may have found my own lead on this which appears to be some limitations in Google's API.  this is a very, very large site to do a URL parameter proliferation issue creating millions of pages on the site. I bet it's safe to assume that Moz has to use sampled data past a reasonable point, and given the size of this site, it's fair to consider the possibility that Moz couldn't match the internal data as a result. Will report back as we work with them on reducing duplicate content and see if that pushes things closer together.

That's a bummer, but at least it's a truthful answer. so thank you! is there a technical reason why this isn't possible?