Overall, it's pretty similar. The core message of love and celebration is intact. In Canada, they might feature local actors or specific locations to give it a Canadian touch.
The similarities are that it still conveys the joy and warmth of Christmas. But in Canada, it might incorporate some local Christmas traditions or settings. For example, different decorations or food.
There aren't many big differences. The main plot and the spirit of the story remain the same. Maybe some minor cultural tweaks for the Canadian audience.