Originally Posted by Arnold K.

In a lot of cars with very dampened clutches you can get away without a rev match downshift and not feel to much of a jolt. I've noticed nearly all Audis don't require rev matching because they are extremely dampened and they have a fairly long slip range during engagement, as opposed to the on-off button we have in our cars.

Yes, you should still do it, but they were designed that way for the average Audi consumer who is unlikely to rev match or know what a rev match is.