I wouldn't consider any sports tuned car to be good in snow, much less a M/AMG/RS car. They're really just high end luxury sports sedans. In fact, even a Lancer Evo and Impreza STI aren't all that good unless the snow has already been plowed and packed down. The CLA45 is probably better in the wet/slush than any other AMG just because it's front/AWD and significantly less powerful and torquey, but I would hesitate to use it there.
And that's not even counting the salt damage. I'm hesitant to even use the CLA45 with the stock summers in the wet.
And to back up what Mike T is saying, all AWD systems are pretty much the same in terms of the fact that two wheels tend to run and power can be split to all wheels (well, other than some SUVs and hypercars). AWD has become the grabbag term for all drive systems that aren't just FWD or RWD.
And that's not even counting the salt damage. I'm hesitant to even use the CLA45 with the stock summers in the wet.
And to back up what Mike T is saying, all AWD systems are pretty much the same in terms of the fact that two wheels tend to run and power can be split to all wheels (well, other than some SUVs and hypercars). AWD has become the grabbag term for all drive systems that aren't just FWD or RWD.