It doesn't make sense to fight over this. I disagree in general that a "1-to-1" port would be possible, no matter the kernel designed... "1-to-1" would necessitate things that would far exceed the ability of the 2600 to display. *For the sake of gameplay* certain elements would have to be sacrificed or altered.
That said, I've been doing a little work on an SMB-like game since this thread started, and at this point I believe that someone could get quite close. The basic mechanics are certainly well within reach, and with some creativity many of the actual worlds could be modeled 1-to-1 (at least, in terms of platform and enemy placement). But in a way, I think that if someone can capture the actual spirit of the game, it would be a crashing success. But that has little to do with converting the song, graphics or title screen IMO.
Edited by jrok, Wed Aug 12, 2009 8:49 PM.