A winner gets 2 points for a dec win, and an extra point for a (T)KO. Froch got 2 points for decisionning Dirrell. Abraham got 3 for kaoing Taylor.
Abraham wasn't Koed. I don't see why Dirrell would deserve an extra point based on his opponent's mistake. If you want to stick to the rules, you might have a stronger case if you wanted to give one point to Abraham as he KO'd him at the same time as the DQ. :hey