1) Their upcoming automotive product line (the new Fiesta, possibly the Ka, the next-generation Focus, the replacement for the US-market Fusion sedan, and the Kuga small SUV to replace the Escape) are coming from their highly-successful European division.
2) The Ford F-150 trucks are well-liked and could switch to large-scale implementation of diesel power over the next few years.
There's a third reason. Ford brought in talented management that has a clear idea of what the problems are and how to solve them. Whether it's too late for them given the damage already done is unclear, but Ford has the best chance of the formerly Big 3 to survive. Personally I think both GM and Chrysler are doomed.