Audi has eliminated the center differential on the Q5 which makes it a default front driver. When rear wheel traction is needed, a clutch engages sending some torque rearward. A second clutch can vary torque distribution between the rear wheels to aid in cornering. I could be wrong, but I don't believe you can select the rear-wheel bias that we enjoy in the Macan. To me that's a big difference, but guess the proof will be in an actual test-drive.
'15 White S, Std Agate, Dk walnut, 18 way, RS Spyder w/ AS tires, A/S w/ PASM, PP+, Infotain, Body color side blades, LCA, 3-zone, Bose, Comfort lghtg, Hi gloss black, roof rails, smoking pckg (Wife's dd)
'17 GTS 'stripper'; VG, Agate/Pebble, 14-way, RS Spyders, E&D, LCA, SC, Seat vent, Nav (my dd)