Question: The short story is that I'm trying to find out whether we'd all get the same results (more or less) from Google if we all searched for the same term at the same time.

Our site targets 10 specific search terms for organic search results. We do no PPC advertising.

When you search for most of the targeted terms (7 of 10), we're in the first 5 results. The rest of the terms are in the top 15.

How consistent is that likely to be world-wide, especially considering 

* searches in other languages might use our city name in English, but other terms in the local language, and
* the influence of Google+ and personalization.

It's my understanding that personalization and Google+ shouldn't affect organic search results at all. Instead, they add information to the right-hand column of the page. I'm not really sure what to do with language, since the terms we target in English might be completely different terms--not just the same words in a different language, but different words altogether--in other languages.

Answer: 
You can't set nameservers *and* CNAME records. 

Go to Namecheap.com --> Manage Domains and click on the domain you want to manage. Then, go to All Host Records and change the settings to this.
 [![enter image description here](https://i.stack.imgur.com/9IDhw.png)](https://i.stack.imgur.com/9IDhw.png)
Without knowing the your actual domain name it's hard to help, but I would recommend you use [IP Tools](http://www.iptools.com/) to figure out where the DNS is actually pointing.