Smash Bros Brawl Desync Issues

[Maurdekye]

A friend and I were playing SSBM over netplay and had a great time, and he said he would like to try Brawl. So I sent him my copy of the game and we both started it up. When we started playing however, the game began to desync very badly; we would start on opposite sides of the arena, our damage numbers would be different, and when we chose random characters they would be different on each of our screens as well. We tried everything, from synchronizing our memory cards to deleting our "Dolphin Emulator" folders in My Documents. Nothing ended up working.