Not sure if you're joking or not, but obviously they've done a search and replace from a Debian document at some point for Jaunty, and then copy/pasted the same thing into the Karmic page.
Posted Mar 5, 2010 0:16 UTC (Fri) by nix (subscriber, #2304)
[Link]
That's what I thought: last I knew, Ubuntu required i686, but, hey, maybe
they just increased their hardware support in the old-machine direction
vastly. (Very unlikely, I know!)