The pros and cons rich result is still a new offering by Google so it is not guaranteed that it will show. However, most review websites even large ones and affiliate marketers are not using this invaluable schema markup and this will give you an edge in the SERP result. To use this the best, make sure to generate pros and cons schema for all of your pages that have a product review and to follow the Google guidelines. This will give you the best chance of having it show on the real Google SERP.