The majority of Kings Island visitors probably have no clue that a place called "Carowinds" exists, and couldn't care less if their websites look similar or identical. Just like how, during the Disney Decade, everyone complained about ride duplication. But do you think visitors to Disneyland give a rat's behind if a similar ride exists in Florida, or are they just happy to have a Tower of Terror?
Same goes for the WindSeekers, I think... The enthusiast community knows and complains, but do Kings Dominion's visitors really know or mind if there's another version of the ride in Ohio? Probably not.