I think this is an issue to save for the next developers chat. I mean they have the info already, its just a matter of adding it somewhere into the forums or possibly the knowledge base. Just like anything else, it can be used as a reference. Im not sure what math is involved. I mean, its more just common sense **** if you ask me. All things being equal, Id want to take over an A+ prestige vs. a B-, unless I have a pre-existing favorite or something. They don't hesitate to put in all the info about recruiting and how much money you get for this and how much for that...that is actual math.
Like I said earlier, they don't want us to know the exact ratings. If they did, it would've been posted. The only thing that will produce results is enough people being the squeaky wheel.