Well, if it counts for anything, my experience of the second one was far more exciting. I was at the Star City Casino watching the game with mates on the big screen they used to have in the sports bar. Most of the crowd there were Kiwis which only improved the after the buzzer win. Plenty of refreshing beverages also added to the atmosphere.
Like most people I'm guessing, my experience of the Wales game was a little more sombre. By myself in the loungeroom in the middle of the night.
That said, both were incredibly exciting moments. The Wales one was certainly luckier as we lost the ball with a minute to go and Wales gave it back to us. The try against Wales came out of nothing though whereas the try against the ABs was after sustained pressure in the red zone.
I'm going to go with the try against Wales as my favourite. Scoring a try after the buzzer at Millenium Stadium to secure a win in Nathan Sharpe's final test was a pretty amazing moment.