Different rankings on a country specific google

How can that happen?

[Sinner_G]

How can a site (let's call it www.sitename.ch) be ranking better on google.com (including www2 and www3) than on google.ch? I thought they all used the same index and algo, but even if they didn't the opposite would make more sense. Or am I completely wrong?

In fact, the site positions are exactly the same for all google.com and google.de. Only google.ch is different.

[flowilu]

Could be testing of the new data centre in zurich,
mentioned in an article:
[heise.de...]

[Sinner_G]

Could well be. Thanks for the article.

Sinner

[Markus]

The Zurich data center is online, but I haven't seen any of Google's domains resolve to it yet. Nonetheless, I think it's likely a problem of different indexes at different data centers.

[whats up skip]

I don't think it has to do with a data centre.

We obtain very different results on google.co.jp to google.com This can also have to do with the language and modules loaded by the person doing the search.