As you noticed, most systems don't have their name company name in front of them, Game Boy isn't Nintendo Game Boy. Xbox 360 isn't Microsoft Xbox 360. The PlayStations aren't Sony PlayStations, etc etc. But some are, like the Atari 2600, 5200, 7800s, Magnavox Odyssey and Odyssey2, etc.
Originally we had the idea to put the name of the company in front of each system, to help organize the side bar a little. Then we got to the SNES and it would have been listed as "Nintendo Super Nintendo" and it seemed redundant. Plus, no one calls it a Nintendo Super Nintendo, or a Sony PlayStation Portable.
Also, I don't know about other areas, but folks I've known in Michigan seem to say "Sega Genesis" or "Sega Saturn" when referring to those systems... so perhaps that one is a regional thing? Of course, since we are listing Sega Master System, and Sega CD with the Sega name in front of the title, it seems to fit. Plus there are other systems that officially use the company name in the title, Nintendo 64, Nintendo DS come to mind.
I want to possibly re-work the side bar systems list. Right now, it's a long alphabetical list of things, it would be nice if we could organize it by company. I have a few ideas in my head, but it's all a matter if @matt can do what I dream up. ha