I can understand what you mean.
But they use the teaser poster artworks.
These artworks are made for the theatre realease, not exclusiv for the canadian steelbooks (as opposed to other artworks).
So its pretty legitimate when a label uses the same artworks for a release in a different country. These artworks are owned by Disney worldwide and are not exclusive.
Furthermore, nobody talks about the exact same steelbooks, but about the front artworks of part 1 and 2, which is completely different.
And with the prices for the canadian steelbooks, I don't see the fun in collecting.