Tim Hortons has 4288 outlets worldwide (http://en.wikipedia.org/wiki/Tim_Hortons) and is in the same restaurant category as Starbucks and Dunkin' Donuts.
Yeah but almost all of them are in Canada. There are several hundred in the USA and a small handful in the Middle East but that's it. This quiz only counts franchises not in the restaurant's home country. Otherwise McDonald's has about 35,000 locations, and Papa John's has over 4,000.