And you were doing so well...the first thing you learn here is that the wise racing samurai does not quote Road and Track for definitive information on his car, nor does he assume his own car's power numbers based on graphs of even an identical car's graphs from the audi forums. I will demonstrate why doing so, especially in your case, is incredibly foolish.
You don't know the conditions of the other dyno graph...what if they did it at 45 degrees 200 feet below sea level?
Also, you should realize that people here have a wealth of knowledge, and just because you've never had a problem with Quattro (nor has your dad in any of his, I assume) that does not make it an infallible system.
Also, bringing up the R&T article is bullshit, but since you're obviously an expert you'd know that they tested an S-Line A4 (beefier suspension, bigger wheels, better rubber) against the Legacy GT specB.
To this, I quote the R&T article that you brought up: "It's the S-Line suspension that helps the A4 tackle just about anything thrown its way," enthused Wolfkill. "When pushed hard it still feels like an fwd-based system," he continued. "But at the same time, you can feel the rear tires working for you in a corner."
So now not only do you claim a SUBJECTIVE analysis to be the authority on AWD cars, but it also defies everything you've said.