Since the first Dupes Debunked was so popular, here's another one (and a 3rd one within a week). Keep in mind that my UPPER LIP is the MAC lipstick & my LOWER LIP is the popular "dupe" that really isn't a dupe..
MAC Ruby Woo & Wet'n'Wild Spotlight Red
The problem with finding a dupe for Ruby Woo is that Ruby Woo is super matte. Most matte lipsticks don't come close to how matte Ruby Woo is. It's crazy. But even then Spolight Red is not blue toned enough to be a dupe.
MAC Dubonnet & NYX Snow White
These are close, yes, but not identical as many say. Snow White is much, much creamier than Dubonnet so you have to be extremely careful when wearing it (it has the tendency to feather). Snow White is also lighter and redder than Dubonnet.
MAC Brave & NYX Thalia
These are completely two different lipstick colors...
MAC Shy Girl & Rimmel Nude Delight
Nude Delight is much peachier and darker than Shy Girl.
MAC Ravishing & Revlon Smoked Peach
These are indeed really close in color but have completely opposite finishes.
I'm currently on vacation so I don't have my collection here to swatch the last few on the lips for you guys. I'll update this post when I can.
Disclaimer: This post was not meant to bash anyone who stated or believe the above were dupes. The idea of "dupes" is extremely subjective - some people are fine with the same color family and other want it to be identical as in "duplicates". When I or others post dupes, it should always be taken with discretion. In many instances, the quality or color of dupes is better than the actual product and vice versa. Being more expensive doesn't equate to having good quality and saving money doesn't automatically make it a good financial decision. Don't buy a product because it's a dupe of something expensive; buy it because you like it.