Well we have 15 or so big clubs in England as well - the fact of the matter is only a handful are recognised worldwide. You see Chelsea, Arsenal, Liverpool, United and Newcastle (don't ask why, I have no idea) shirts being worn worldwide, because these are massive football clubs. However, if you were to ask the average football fan who was the biggest team in Brazil, they'd struggle to answer it. Santos, Corinthians, Gremio are probably the three most popular ones people would be able to name in England.