What do you think guys? Having reviews in google is probably optimized for searchs while having comments like disqus, facebook comments or custom is better to grown a community and people communicate easily. What have more weight? Btw this apply to sites about movies, recipes, etc
If the reviews contain good original content with relevant keywords, you are probably right. Comments may be more useful in Social Media Marketing such as Facebook, Twitter, Linkedin, etc.
but... the problem is that if someone want to ask something, they cant, because there is no comment box. and also, an user cant reply to another user in comments. reviews are good in stores but for example in a web of recipes... why google is promoting reviews that much? its "hurting" the websites because the reviews probably sucks (if not fake) and comments are more usefull. that quote from google "dont make websites for search engines, make them for users" doesnt make sense now cause they are forcing us to use reviews or fall to the bottom of search results page
Having good and genuine reviews will really make difference in your direct traffic and organic traffic as well. Posting comments is something that you do yourself but reviews are written by your users or customers or members. Therefore reviews are far more stronger that just posting comments. Good Luck!!