I'd say it's not a bad result considering the new Foci are more expensive in real terms (~factoring in rebates, etc). Looks to be selling nearly as well as the Elantra. I still don't buy Ford's argument about inventory constraints, however. My local dealer has 92 2012's currently in-stock.
I can't believe the Civic is doing better...that is one dull and cheap looking car!
But...I think that competition will be heating up now that cars like the Hyundai Accent/Veloster, Sonic, Cruze Diesel, VW Beetle/Beetle Turbo, Jetta GLI. Now, most of these are not direct competitors to the Focus, but they still may fall within the radar of someone looking in it's segment.
Long story short...I think that there will be higher rebates coming (beyond the $500 cust/$500 finance cash they offer now). Not sure if they are doing private cash anymore.