Ford has proven time and
Ford has proven time and again that it is a smarter, stronger, and more efficient than Chrysler and GM. Remember... they didn't require Government $$$ to stay afloat.
I highly doubt GM has the cash on hand to buy up Saabs assets, or that they would be interested. It would be buying technology they most likely already have and know about. They probably just wanted to delay anything technology information going to Chinese automakers.
Adam