Rutherford and definitely FW Franz would have posted IQs in the higher levels.
Intelligent people can use their inherent intelligence to enhance their self own identity of what they personally
strive to achieve. Reading the works of J Rutherford and F Franz, one can see their intensional coercive and manipulating tactics
they created themselves in supporting the proliferation of the WTS. publications.
If one was to make a comparison of intelligence between the two, I would give the nod to Rutherford, based upon how he almost single
handling took over the WTS. for himself, changed the names of the two most prominent pieces of literature published
by the WTS. ( Wt. and Aw.) and then create a new name for the organization the Jehovah Witnesses from the IBSA,
as a means to separate and distinguish himself from the followers of C T Russell. In doing so he not only created a
semblance of power and control toward himself, by using some assuming forethought of all the money, people, buildings and
equipment that Russell had already built up around the WTS.
Now that my friends takes brains and a lot of chutzpah