I have driven AWD vehicles for 30 years, here is my ranking of all the cars I've driven for snow traction (all with Winter tires):
1) Mitsubishi Evo 9 - Last of the true mechanical AWD systems, mechanical LSD front and rear, electronic variable locking center. 100% predictable, completely unstoppable except for ground clearance.
2) Subaru STI - Very similar in terms of performance to the Mitsubishi, but a little less predictable (note that these first 2 are arguably the best AWD systems ever found on cars, with some early quattro designs being close)
2) Mitsubishi Eclipse GSX - VC center and rear, aftermarket mechanical LSD front. Great performance until the VCs wore out, which happens pretty fast and then the car wasn't as predictable anymore.
3) Ford Bronco - old version. Manually lockable AWD. Probably the most reliable and very predictable. More a truck than a car though. This is 4WD not AWD.
4) Subaru WRX - VC center, equal length half shafts. Quite predictable, and the traction control isn't super intrusive.
5) Honda Pilot Elite - Torque Vectoring AWD. Still feels very reactive to me, but it does catch skids and rotations better than any open front/rear diff system. It does have fantastic ground clearance.
6) M3P - It's VERY slow to react to slip and rotation, and if there is enough rotation present it does not correct and the car spins. It does a good job off the line, but turning of any kind in snow is its Achilles heel. Pretty much no ground clearance. This could be so much better with better programming.
100) Audi S4 - Torsen center diff, electronic brake open front and rear (modern quattro). Traction control is terrible, car will just stop dead with no traction. With traction control off the car will spin so easily it's a death trap. Modern quattro is absolute garbage.