if additional sensors improve the ai, then your last statement is categorically untrue. The reason it worked better is that those additional sensors gave it information that wac not available in the video stream

"If."

So far, every self-driving accident where the self-driving car was found to be at fault follows the same pattern: the car had all the sensory data it needed to make the right call, and it didn't make the right call. The bottleneck isn't in sensors.