Agent smiths differ from the other Agents

[cloudwolf]

There's also the original script for M2 that is completely different than the M2 we know of.

At least the PotC makers had the balls to say they had to make 2 and 3 look like they were always meant to be woven into 1.

Of course the Bros wanted sequels. Did they write up the specifics for them before making number 1 so that if they ever were made it'd all be coherent? I somehow doubt it.