Yep! Same thing. It all depends on what the certain hatchery decides to call 'em.
~~I stand corrected! If you go to Cackle Hatcheries web site (I wouldn't recommend them however do to personal reasons) they have Red Star's and Red Sex-Links. They are both sex-link's, but are different.
You don't by chance have anyway of getting a Rhode Island Red rooster and a Delaware hen do you? That is what Cackle (maybe other hatcheries also, not sure) crosses to get the Red Star. Just a thought.