It's the same game rules but the name and playing pieces are significantly different. Searching for Jekyll & Hyde directs you to the Ghosts page which might be confusing for people browsing the site as the title and game avatar is different to the Waddingtons' version. They may not think to scroll down and check the variant titles or look for images in the gallery, and just think they're on the wrong page.
It would be nice when those redirects happen for there to be a note at the top of the page saying something like 'the game you searched for is included in this entry because it's a thematic variant with the same rules' or something, so you'd know you came to the 'right' place (and I use 'right' loosely)
Yes I suppose so but for the sake of user-interface perhaps versions that have significantly different titles and game components should have a separate entry. (Neither the title nor the pawns involve ghosts in the Waddingtons version.)