LU
The mechaber does NOT say “shnei mini ochlin” That is what the Rambam says.
Though the A”H is explicit that the foods have to be different (as I mentioned earlier http://www.theyeshivaworld.com/coffeeroom/topic/inaccurate-things-teachers-tell-us/page/3#post-649963). This not clear at all from the MB nor the Shulchan aruch. In fact the MEchaber implies they dont have to be different, (shnei manos bassar oh shel mini ochlin = two portions of meat or of types of food) and the MB does not comment at all.
As for labeling the Rambam as a misprint, I could hear my Rebbeim fuming at tthat. Though who knows perhaps it is.