They have the Nikon D600 for just 250 less. Canon 5D3 vs Nikon D600 for almost the same price?
Why not? Nikon users are as unlikely to switch brands as Canon users are, and if many of them have been waiting for a ff cam but didn't want the 12mp d700 or the more expensive d800 then the demand for the d600 will be initially high.
The 5d3 will sooner or later reach the point when all people willing to pay €3000+ will have bought one, so the price has to drop to find sufficient customers - or they'll do discounted bundles with the 24-70ii which is what I'm waiting for.