Yeah, my big question is whether that top answer is wrong or not. Most people here seem to claim it's wrong.
If it's correct, then decking in AR certainly seems like an attractive option, especially for a part-time decker. You could have a decker that could also be a decent (and certainly quick) street samurai. But even for decking, the real comparison is with cold-sim VR, which doesn't get the bonus, but still gets biofeedback, and leaves the decker incapable of doing anything else. The AR decker could keep moving, interact alternatingly with meat space and cyberspace, and be very fast in both. Sacrificing two dice to be immune to the physical biofeedback of hit-sim VR does not strike me as a terrible deal.