In the comics, the curse of the Wendigo resulted from cannibalism, rather than ego. All instances of cannibalism have been removed due to broadcast standard and practices. The Wendigo was also in Canada, but in Man to Man, Beast to Beast (1996) Hulk had just fought another furry beast, Sasquatch, in Canada so the location was changed.
This episode is inspired by the story from "The Incredible Hulk" (vol. 1) #162 by Steve Englehart and Herb Trimpe which featured the first time the Hulk fought Wendigo.