I have a university degree and I know many witnesses who are similarly or better educated , including quite a few PHDs (although it is true to say that higher education is discouraged). Most , like mine , are more in engineering or similar disciplines rather than academia.
One of the problems of JW literature is that they tend to go for the "one size fits all" approach - hence the "kindergarten dumbed down" approach of much of the study media , like the "Really Teach" book. I have a call on a Greek theology professeur (not a witness) who has rigorously studied the Insight books and uses them in his teaching , so JW theology does appeal to certain individuals of an "educated" bent. An error many of the posters seem to have fallen into is the assumption that "higher education = better educated." It is my experience that this is not necessarily the case - my wife does not have a degree , yet she is far brighter and more intelligent than I am. Many of the non graduates who work in my sector of employment are far more able than the graduates , some of whom spent their studying years in an alcoholic haze.
I suppose all religions attract various types of people from across the spectrum , and JWs are no different to others in this respect.