Greetings Shiva,
And welcome to Raganuga Discussions. I browsed through the two debates in gaudiya.net debate section. I noted many of the contributions on both sides were very lengthy.
For clear and conclusion-oriented debates, it is helpful if exchanges are kept short and if claims are backed up with reference.
In regards to the topic header -- the initial question for starting the discussion -- "Is Radha or Krishna the true object of affection?" -- you'd have to first define the meaning of "true object".
Let us take it to mean "prominent object". Firstly, it depends on the individual's rasa. Let us assume we mean those in manjari-bhava. In them, affection for Radha predominates over their affection for Krishna, and their affection for Krishna is ever dependent on their affection for Radha.
Of course, this does not by any means imply that their affection for Krishna would be "false", in contrast to "true" as you asked, only that the affection for Krishna is subordinate.
A recent topic entitled
bhavollasa discussed the issue at some length. Check it out, particularly the later contributions there.