The real question, however is, does Google really analyze rich snippets with their algortihmic bots or do they have this as a ranking criteria to make it simpler for their human rankers. Well, for all those who din't already know, Google hires human rankers to rank websites and give a non-technical ranking or analysis of website's quality and relevance. These rankers are provided with keywords for which they have to execute a simple Google search and filter out all those sites that do not provide relevant content but still rank at a position they do not deserve. Most of these rankers have to complete ranking of a number of websites within a hour or two, so it is rumored, that they just pass on their comments on various website's based on the rich snippet alone, that appears on the search results. Google, however, has confirmed that they do not rely on such findings and no human ranker can decide the web page rank of a certain website, but the truth is, it does in a minisclue manner affect your site rankings.
In conclusion, all I would advice is better be safe with providing a rich snippet that encompasses everything that your potential pre-web visitor needs to see and enhance your web visitors user experience to attain more conversion rates and to be in the good books of search engines like Google.