Haha yep, My mom watches a channel where they have Celebrity marathons so i see a lot like Sweeney Todd on. About 3 weeks ago was the Winona Marathon (Beetleguice, Edward Scissorhands and all that fun stuff)
If they edit parts out (which is dumb, because that's part of the great-and little-emotion we see of Todd) or shorten some scenes, I'll bet Syfy will show it (I know they show alot of gory movies).