As far as I am aware it has long been established that Gold is a more modern emulsion, the first iteration of which was introduced as Kodacolor VR-G in the late 80s with the purpose of making photos taken on dull days look brighter and more colourful....holiday snaps, if you will. It does this but, to my eyes at least, looks much less pleasing than the previous Kodacolor VR which has somewhat more natural colours especially at the red end.
Kodak Color Plus has long been said to actually be Kodacolor VR....backed up by the fact that for as long as it's existed it's been sold in cassettes labelled "Kodacolor". No doubt it's been tweaked since 1986, but it's a simpler and less saturated/more neutral colour palette than Gold.
Horses for courses. Many people like Gold. I simply never have. Assuming I'm not unique in this perspective, there's a business case for both. Additionally, certainly across Europe, there's about a 20% price difference between the two in favour of Color Plus.
Anyhoo none of this really is relevant to the new Lucky film. Which looks promising. The relevance might be that they were believed to be also using a derivative of Kodacolor VR back when they were producing film under license from Kodak. If the new Lucky colour film is based on the knowledge gained during those days, it could well be similar to Kodacolor VR/Color Plus. Whether it sells in the West is going to depend on price, distribution, QC and how well disposed people are to buying Chinese film.