The layout is just about the definition of a FWD based AWD car, that's not necessarily a bad thing. It is what it is and it makes them front heavy. What's a sports car, what's a FWD based AWD car, those are semanitcs and made up terms that we could argue over opinions on. Curb weight is a pretty rigidly definied thing and includes a full tank of fuel. 3384 lbs is a big stretch and I can about guarantee is with no fuel (which is not the definition of curb weight). Sorry, I'm going to trust Edmunds on this one, they have no motive to fib. http://www.edmunds.com/used/2000/audi/s4/1646/specs.html
I'd be willing to put some money on the 3384 being the exact car I said earlier. No sunroof (I'm sure you know this, but sunroof delete was the option and there are very little of those cars), base model (so no added weight of any other options) with no fuel. Again curb weight, what almost everyone talks about when talking about a cars weight, is with a full tank of fuel. Then some other liberties taken, like no spare.
2700lbs is stripping every god damn thing you can get your hands on out of that car.
I didn't know that all early 2000's didn't have aluminium uprights. I was under the impression that every car below some VIN (approximately) was aluminium uprights. At any rate, my car did have aluminium uprights.
Do you want me to go dig up the print off's of my car's weight? Which I do have one without a full tank of fuel (can't remember how much) and 1 with a full tank of fuel. Not that it matters because we know how much fuel weighs and how much the car can hold (hence my ~125lb for fuel comment earlier).