Subaru AWD is a serious system. Photo of an accident in my town a few days ago. And no they were not stacked. This is how they ended up. You can't make this stuff up.
I don't think it's so much an issue of AWD on the Subaru as it is simple bumper height mismatch. Standard height Outbacks can climb up on low bumper height cars in a frontal collision.
And I don't see airbags deployed in the Subaru; not sure of the other car!