These days, when most ruling elders have a part-time vocation (to that post, and a full time "secular" vocation) and most teaching elders are full-time, it is easy for people to begin to give greater authority to "the preacher." It is easy for this to happen, but it ought not.
Consider these words that I recently happened to stumble across: "both the gospel minister and the ruling elder are the biblical presbyter, and that these are distinguishable offices within one order" (link).
There are distinguishable, yes, and yet of equal dignity. Read the article at the link for more info.