Since I have a 2014 Ex Sport and it has this feature. I can find no real world application where its important.
All it does is tell us what we already know for our Taurus. The platform is a FWD platform that send a little power to the back.
On the Ex Sport, yes, more power goes to the rear in different drive modes, but again...anyone with half a brain expects it.
In my 2013 SHO. I can think of not a single time where I wish I had that gauge.