Forum OpenACS Q&A: Response to mysql passes the acid test?

As a new reader to these sites, specifically regarding mySQL vs postgreSQL.  I must say that there is a lot of emotion tied into most of the responses I have read.  I understand the desire to defend ones point of view, but as an unbiased reader trying to determine the pro's and con's to both mySQL and PostgreSQL the emotional bloat tends to hamper that process. Please just list the facts, be objective and support ones arguments. Allow the reader to make his/her conclusion them selves.