I'm doing some quick math and the 9-year production run of Sony Playstation games ties the NES. I think they were equally important systems. The NES rebounded the entire video game industry, the Sony Playstation expanded it beyond the core market of kids and nerds. Like the NES, the Playstation had several years of new game releases after its predecessor was out.
The FIFA series began on the Sega Genesis and was an immediate hit. Like Hockey, I think more people buy FIFA soccer than watch it on TV. I'm not going to launch a big "soccer is boring" rant but let's just say FIFA soccer is 1000x more exciting than the real thing (same for hockey). I was a little surprised when I saw Madden 2004 for Playstation on the shelves in 2003. Given EA's record of releasing updated games for dead consoles it wasn't too big of a shocker though. However, it was quite surprising to learn that FIFA Soccer 2005 was released for the Playstation in October 2004 while passing on Madden 2005. Of the two I'd expect Madden to greatly outsell FIFA, even to a diminished Playstation market.
For the sake of thoroughness I'll note that NFL Gameday 2005, released in August 2004, was still available new in stores until late 2006 after FIFA 2005 was generally gone.