The point stands, but I think you meant another show here.
For all that Fox catches a lot of flak, they really did have a good track record as far as giving sci-fi shows a chance to at least see air when the big three wouldn't even touch them. Not to mention something like Fringe, which is still on Fox and in its third season.
I would quibble on the last point though. I wouldn't really consider Chuck sci-fi/fantasy, though certain elements of it are fantastical. BSG ran on SFC, so it's not really a good comparison to the Fox shows. A better example might be Lost.