Ontario Ground Hogs: Wiarton Willie Vs Spanish Joe

Ontario's two Groundhogs are getting ready to face off in the battle for spring.
Will the phycic be more reliable in his predictions or will we need to rely on the old fashioned sun and shadow theory?

Spanish Joe, who lives in Spanish Ontario claims to be the worlds only phycic groundhog.
http://www.geocities.com/homeofspanishjoe/.

Wiarton Willy, perhaps Ontario's most famous groundhog is going to rudely awakened, next Wed. an pushed outside to a much colder environment.
http://www.southbrucepeninsula.com/index.cfm?member=willie

Why are the only two predictors for spring or more winter living in areas considered by many to be Northern Ontario?