I give it a 9/10. It would have been a 10 if the NC did not happen in the co-main and the Jimmo injury cut another great fight short. Parke and Tuck was nothing special but everything else was awesome:
-Lyoto Machida defeated Mark Munoz by KO, 1st round
-Nicholas Musoke defeated Alessio Sakara by Submission (Armbar, 1st Round, 3:07)
-John Lineker defeated Phil Harris by TKO (Ref stoppage, 1st Round, 2:51)
-Al Iaquinta defeated Piotr Hallmann by Unanimous Decision (29-28, 30-27, 30-27)
-Luke Barnatt defeated Andrew Craig by Submission (Rear naked choke, 2nd Round, 2:12)
-Jessica Andrade defeated Rosi Sexton by Unanimous Decision (30-26, 30-27, 30-26)
-Cole Miller defeated Andy Ogle by Unanimous Decision (29-28, 29-28, 29-28)
-Jim Hettes defeated Robert Whiteford by Submission (Triangle choke, 2nd Round, 2:17)
-Bradley Scott defeated Michael Kuiper by Submission (Standing guillotine choke, 1st Round, 4:17)
Great event of fights, including the prelims.
Can't argue with your 9.
Here is a link to the WSOF prelims if you were looking for it:
http://www.mmajunkie.com/news/2013/10/wsof-6-live-preliminary-card-stream-and-full-card-results
8/10 Mainly bc i was really looking forward to that guillard/pearson fight. 
Guillard/Pearson was a bumber but it happened with Big Nog/Fedor and Randy/Vitor, Hell, before Rizzo/Randleman I, Randleman slipped on some metal pipes backstage and had to pull of the event due to injury. Supposedly that is the legit reason and story.