ChunkyBeef
Smash Lord
1.) The general consensus is that the other character is a CPU and the '3' is simply the CPU level.Well, for one, there are multiple player 3 spots, it looks like. There's no hand cursor on the P1 token. Marth is shown on what appears to be the Player 2 screen when the P1 cursor is over him. Marth isn't in one of the pictures despite the P1 cursor being over him both times.
How's that?
2.) I theorized, I think on another topic, that the hand/cursor might disappear when you pick up your token, and reappear when you set it down/select a character.
2a.) Someone also suggested that it's possible that the screen could've been controlled via 3DS, but while definitely something to consider, seems far fetched for just a demo.
3.) In one of the pictures, Marth has the P1 token on it and seems to be in the P1 character slot.
3a.) In the other picture, Marth has a P1 token on it and is clearly in the P1 character slot.
I'd say the reason why all the slots seem to have '3' on them is, again, the aforementioned CPU level.
At this point, it's anyone's guess. I just don't find the arguments against it to be entirely convincing. Having said that, it's still for the best for everyone to keep their salt grains handy.