This has always been the interpretation. It has always been a forward pass - not a forward catch. It is about the pass in relation to the player's movement rather than where the ball is caught. I thought I would analyse the tries from the so called "game of the year" and look for forward passes under your interpretations. Here is the video:
http://www.youtube.com/watch?v=1iYwu5ujOF4
From 3:10 you see a try with a clear forward pass. Vermulen was standing before the 22 and Habana catches the ball inside the 22. Your interpretations - No Try. As it was the All Blacks didn't even bother complaining and the referee did not check it . It would be very difficult for a referee to pick up that that was a forward pass.
From 3:48 you see the ball from Alberts clearly travel forward but the hands went backwards. Most people said try of the year - you would have said no try.
Same with the first Messam try - 2 or 3 forward passes in the lead up.
I could go through the rest but I don't see the point. The point is your rules would have ruined the best rugby game of the year and probably every other one.