I am not so sure there is.
More luxurious, perhaps, but not really the combination of power, sleekness, and versatility of 5-doors, with AWD.
Rapide is more expensive, and RWD-only... probably too fancy to risk in the snow. Bentleys may have the AWD, and more luxury also, but not really the 5-door body style.
Panamera is perhaps closer, with turbo V8, AWD, and PDK, with a 5-door body style... but isn't quite this much of a looker.
Audi RS7 may be the complete package.