Bene Gesserit vs a Duncan or a Gurney
I think it's pretty clear from the first book that any Bene Gesserit is more skilled at fighting than either Duncan or Gurney, right? Didn't Jessicas teach them as well as the Freemen on Arakis?
I think this is still maintained in Children: when Duncan withdraws from Atriedes service, Jessica is preparing to killl him because she think he may blow her plan, However, he says to her that "you will not slay me" which makes me wonder if he could have taken her. of course, since he was only acting anyway, he may have just said that to suprise her and to get her to back off.
"At the end of life, we will be judged by love" ST John of the Cross