Which are the biggest wins by Asian teams in FIFA WC history?

Japan recorded the biggest win by an Asian team in FIFA World Cup history after defeating Tunisia 4-0 on Sunday (IST). The second-biggest win was also registered by Japan in 2010, when they defeated Denmark 3-1, followed by their 2-0 win against Tunisia (2002), South Korea's 2-0 win over Poland (2002), and South Korea's 2-0 win over Greece (2010).