The short answer is, yes. The truth is both villages were built approximately the same time (1978-79), by the same builder and contain the same variety of models. The distinguishing differences between the two would be their clubhouses and amenities. Of course, this is all my opinion.
See for yourself; http://flanaganrealty.com/adult-communities/berkeley/
They are two different sections of Holiday City with different clubhouses. The same model homes and the same price range for the homes. HC Berkley is the middle section of homes. HC Carfefree is off to the west of that in the Bannier Driver part of the community.