Why does SEO Moz say we are ranked lower than appears on Google Searches?

[Peter.Huxley59]

We are currently ranked 18th for the Sydney Vet keyword in SEO Moz ranking tools, however in organic Google search we are ranked third. This search was conducted without Googles personalised results feature.

Is this just an error? Or does it have something to do with Google Places not being counted in SEO Moz ranking tools?

Any help would be much appreciated.

[Unity]

I believe it only counts ranking placements from Universal search results. Have a read of this page http://www.seomoz.org/help/rankings

[KeriMorgret]

Have you checked out our Help Hub page about rankings at http://www.seomoz.org/help/rankings? It offers several reasons why what you see and what we report may be different. Hope that helps!