I actually think that statistic refers to the early daVinci surgeries that didn't go so well and often cancerous margins got left behind. It is why my doctor, Catalona, said that regardless of
open vs. daVinci, it was most important to go with an experienced surgeon who had done 100s of surgeries.
When I was choosing between open vs. daVinci, I went to a daVinci team at Univ of Chicago. There were two fine surgeons who had each done almost 1000 surgeries and their recurrence rates for organ confined PCa were very low...lower than the overall standards.
Of course there are those who will say that surgeons choose good surgical candidate to pump their success rates, however I have many family members in the medical field and do not feel this is common practice at all.
Best advice is to find a good surgeon. My research said there wasn't much difference between either surgery with a good surgeon.
My reason for going with open to minimize the risks of adhesions that can happen with the daVinci surgery. It was something that had been problematic for me already so it was one risk i decided I didn't need to take.