Google tried to make life easier for users who are spoilt for choice with so many Android phones in the market. They have made a phone gallery with all Android phones (from various manufacturers) so that you can compare them.
However, if you could not find a particular Android phone on the gallery, it might be because it did not use the services provided by Google.
All the phones in the gallery include Android Market, Google Search, and other Google Mobile services such as Gmail, Maps, and YouTube. There are tools that make it easy to compare phones side by side: you can filter phones by country, manufacturer, and carrier; view and compare technical specifications and features; and find where each phone is available for sale.