As far as I understand, the endgame of this stuff is a piece of software which would make a robot that was an exact physical equivalent of a fly without a brain

As far as I understand, the endgame of this stuff is a piece of software which would make a robot that was an exact physical equivalent of a fly without a brain behave exactly as a real fly does, assuming we had the computing power to run it in real time. Are these projects actually going for that, or do they have some more modest goal for what they expect to achieve, say, before 2020?