I'll disagree here. Folk and Free are not as similar as people seem to believe. I am not sure how to explain it, but there is a reason that every stud FS guy isn't jumping on airplanes to come Wrestle NCAA Folkstyle.
Rin Sakamoto is the example I am going with...he couldn't crack the lineup. Now, he isn't Ono, but he is dynamic in neutral on par with the best guys in the world. Mat Wrestling is seemingly hard for people that have never done it. So if you have three grades for Folk, you have two for Free.
Folk - Top, bottom and neutral. If you cannot muster better than average on the mat, you won't contend for a title. It is hard to learn US mat Wrestling if you've never done it. They are going against guys that have 20 years of experience and work in those positions.