For a lexus it handles well, but compared to many luxury cars, its just average.
Edmunds even said it wasn't that fun to drive. Just because you have the horsepower and RWD does not mean it is fun to drive. Lexus' only strength is for passenger/driver comfort (quiet *rumored* and smooth)
I know Lexus is conservative, so the LS 460 is not a bad step. But they could of done better, but its still a good car.