Makes sense to me. Just like Halo 3, Brawl saves the inputs of a match, not an actual, compressed video. It just "recreates" the match based on all the button presses that were made...thus allowing you to pause and rotate just like in a normal game.
And just like playing SSB64 online, which also takes the inputs of each player, sometimes it lagged and then the players are not where they think they are. Maybe with these replays, something glitches for a split second, and suddenly the characters are a few inches to the left of where they were before, or it takes too long to enter in the controller inputs, off by milliseconds perhaps.
Then when Falco side-B'd, instead of knocking Kirby around like the first time, he's just side-B'ing around the middle of nowhere. I think it's possible, though I don't know if this is proof, and it apparently only happens on some custom stages.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )
