It might be due to geo-specific keyword.
Such as .... california hotels? Its not, its more like "blue widgets"
One more thing that comes to my mind is the possibility of searching on Google when you (or our client) are signed with the Google account. That can create a difference in rankings for sure even when all datacenters are showing same rankings
no, its not that, discounted that already, my testers have no google account, and have checked mine and clients is turned off.
You are going to get geo-located differing results, whether it's term specific or not.
This has been in effect for about 10 months from now.
As far as the whys?
whether she's clicked on the link or not,
"impartial" datacenters will also often geo-locate,
10 other things Goog does to the SERPs to make them more "personalized" and hence different.
What does the WMT rank the site as?
While often buggy, WMT is the only "constant" you could use if you're getting paid for rankings.
wmt says 12.
that is so annoying.
I agree and have been having the same problem. Very frustrating when trying to evaluate and test. I content myself with my local results and a "different" data center, that way I can at least average out the differences. Otherwise its like I am living in my own reality which may not be anything like what the rest of the world sees....
Have you checked the SERPs using various Google scraper sites or proxies? That might give you more information.
"safesearch" option is another thing that can influence results. Some companies set internet access to default to safesearch=on and it cannot be changed by office staff.
Cookies. Sometimes I forget to clear them and get mildly excited because I'm seeing different results on different browsers, then the pea I call a brain falls into place and I remember that this happened 6 months ago and why.
i was checking all data center, through many different proxies, not logged in, no cookies.
of course now today, everything is at 12....
a) a single monarch butterfly
b) expectations of quarterly results
take your pick