Also, why is there no mention of the MLB Manager with the most World Series wins, or the NHL Head Coach? In MLB it's a tie with 7 between Yankees Joe McCarthy and Casey Stengel, while in the NHL it is Scotty Bowman, who won 9 (5 with the Canadiens, 1 with the Penguins, and 2 with the Red Wings).
By the way I am a NY Giants fan, not a Packers fan, so there is no bias.
If you want to call the World Cup a more "representative" international event I might say that's one way to change it, but it would be the equivalent of the Olympics in hockey. Its a great achievement to win, but isn't the summit of its sport; the World Series is that.
Feel free to make suggestions, and to create your own quiz!
Cycling was on here before. The level of whining about Lance Armstrong's inclusion was epic. Personally, I've written off the whole sport as tainted
Rugby would probably be a good addition.