Now that I've taken the FJR on a decent ride to Eungella I can reveal which bike, FJR or ST1300, I prefer for FarRides.
It's the ST1300.
And I can also understand why the police would prefer the FJR for the riding they do.
I can only comment on the ST1300 and FJR. I have never ridden a GW, BMW, Kwaka, Suzuki, Triumph Trophy, SuperTen, HD, etc.