Germany went 8-0 in the tournament, becoming the fifth consecutive champion to go unbeaten.
Sounds like that’s inherent to the structure of the games. Either you win all your matches, or you don’t win the world cup.
A notable outlier is Serbia/FR Yugoslavia/Yugoslavia. Serbia is the only team in the last 5 tournaments to go into the final with losses (and then lost). In 2002 and 1998, FR Yugoslavia went into the final with losses, and won. In 1994, the USA was unbeaten. In 1990, Yugoslavia won with one loss. Past that they’re no longer an outlier, in 1986 the USA won with one loss.