Fine.
When Spain, Australia and Zambia get American football teams and they want to compete against US American football teams, then will you be happy?
Until then, the NFL Champions will continue to be WORLD champions without having to compete with other nations BECAUSE the other teams DO NOT EXSIST.
If there was only ONE TEAM in the world that played 43-Man Squamish, then they would be WORLD CHAMPIONS AT 43-MAN SQUAMISH!
http://en.wikipedia.org/wiki/43-Man_Squamish
I would suggest your next step is to sue the NFL for improperly using (according to your lexicon) the meaning of the words “World Champions”.
Have a nice night.
Yes They do, there is the Canadian Football league for starters, and there was, for a few years, a European League with teams in Spain England and who knows where else.
We'll just have to agree to differ.
By your own admission you don't have a world sport.
Personally I don't think you can be "World Champion" of a sport that has no international component. If you choose to call yourselves such then it is extremely shallow and the only ones you are deluding are yourselves.