Analysis of information sources in references of the Wikipedia article "History of video game consoles (third generation)" in Simple English language version.
The Master System sold an anemic 13 million to the NES count of 62 million.
As it's sold bundled with the Wii console outside Japan, I'm not quite sure if calling it "World Number One" is exactly the right way to describe it, but in any case it's surpassed the record set by Super Mario Bros., which was unbroken for over twenty years.
Units sold: 10 Million
The Master System sold an anemic 13 million to the NES count of 62 million.