The court heard the response officer touched the back wheel of the e-bike with his Ford Focus marked police car, causing Mr McGarry and Mr Mizzi to lose control and fall to the ground.
Mr Bradshaw described in court how police were involved in regular pursuits with electric motorbikes in the seaside town, but they were normally unable to stop the riders because of the speed of the vehicles and their ability to go down alleyways and closed roads.
Superintendent Rachel Glenton, head of roads policing for Surrey and Sussex police forces, said: "We expect the highest driving standards from our officers and staff, and road safety and reducing the number of people killed and seriously injured on the roads is a priority for the force.
After the verdict, Andy Newman, deputy chairman of Sussex Police Federation, read a statement outside court on behalf of Mr Bradshaw.
The court also heard that Mr Mizzi had been injured in a previous e-bike accident, and another young man had been killed in a crash nearby in the previous month.
