I'm afraid I cannot comment on these details. The TT Pro League is a private company, although it does receive support from the government.
The difference between the Pro League and TTFF/TTFA is that they are representing the nation, much like the English F.A. TTFF/TTFA are also, I believe an NGO.
However, I would feel it beneficial if Sam's questions were answered by the appropriate administrators for the sake of transparency, although I guess most of the sponsorship and government support is in the public forum somewhere.