According to Franz' testimony, decision making in those days (1950s) came down to the Vice-President, then the President, Franz and Knorr, so what they called a governing body then, the board of directors, really had little to do with governing Jehovah's Witnesses.
However in the 1970s it changed, so that the Pres and VP had no more control than any other GB member...is that not true? It's much more of a true governing body now, although I'm not sure how well it parallels the Apostolic council in the first century, certainly there isn't unaminous agreement today.
As a side point, I've wondered, if Knorr and Franz had the control, and they were both against the institution of today's governing body, how did the GB ever come to be?