User blog comment:Wassboss/River Song vs Gwen Cooper/@comment-26074921-20120429064252

River has this easily. Gwen may be a trained operative but she doesn't come close do having seen the kind of action that River has. (a side effect of traveling and adventuring with the Doctor).

The only problem she may have are Gwen's superior weapons but I believe that River is intelligent enough to "think on her feet" and overcome her.