I don't see why anyone would think the filmmaking behind Creepshow is even on par with Killer Klowns. They couldn't even competently light a scene in Creepshow. Even the best short in that, the Ted Danson and Leslie Neilsen one looks like a daytime drama While Killer Klowns has a lot of genuinely good looking exterior sequences and interesting and complicated effects.
http://thetramp.filmaf.com/owned
https://vimeo.com/402818980