One of the factors in ranking with domain names, in Google especially, is the relevance of the TLD to the local market. For example, if you have xxxxxx.co.uk, you stand a better chance of ranking in google.co.uk then google.com. That’s not to say you can’t it’s just slightly harder.
So with a ccTLD like .cc, if there isn’t a “local” Google for the domain, or the registrar isn’t based in a market with a dominant lcal Google, then you have a better chance of ranking. So in that respect, .cc is quite a good choice, although a .com or .net may well be slightly easier to rank with in google.com. An example might be xxxx.io – .io is Indian Ocean, but there is no local Google for that. However the principle registrar for .io is UK based so there is a chance that it will do better in google.co.uk than google.com.
Of course no-one knows exactly how Google’s algos work, so the effect might be minor, but it is still regarded as a strong theory.