Hi,
1. Yes. Darknet can be installed and run on the Jetson devices.
2. Please try our Deepstream sample first.
It can inference YOLO with the .cfg/.weight format directly (TensorRT backend)
/opt/nvidia/deepstream/deepstream-5.1/sources/objectDetector_Yolo/
3. You can get some acceleration with TensorRT.
4. Performace is similar for the same model.
And accuracy depends on the way you train the model.
5. Please give TensorRT a try.
6. MobileNet is faster than YOLOv3.
For accuracy, please check some academic analyses for the details.
Thanks.