Not at all. A human would brake as hard as they can; the computer could detect the object and begin braking soon enough to brake more smoothly.
A computer also wouldn't be going fast enough in the first place that its panic braking could reasonably cause a driver to hit it. Tailgating one would make it slow down. But no one ever claimed that robotic cars could save you from other drivers' errors; that's the whole point, they should be universal because drivers kill other people.
A computer also wouldn't be going fast enough in the first place that its panic braking could reasonably cause a driver to hit it. Tailgating one would make it slow down. But no one ever claimed that robotic cars could save you from other drivers' errors; that's the whole point, they should be universal because drivers kill other people.