It's probably not fair to put all of them in the same bucket. That would be like putting all Catholics in the same bucket as "Catholic Worker" types or "Liberation theology" types, etc.
It might also do you some good to look up a fellow by the names of John Nelson Darby and Ethelbert William Bullinger. Understanding what he taught would help explain much of what is passed here as orthodox protestant belief. (From what I understand, there are as many protestants that categorically reject doctrines promulgated by those two as accept them). When you start hearing the elevation of Pauline epistles over the gospels, you should always think about those two names.
One question that is worthy of asking is if the posters in question have a particular affinity for the Gospel of Luke, as well.
I agree, but the rabid anti-Catholics on this site often attack "Catholics" because of a misinterpretation of the term "alter Christus" by assuming that it means "another Christ" instead of the correct "in the role of Christ". I simply linked the two nearly identical errors.