5v 6a barrel jack power supply v/s 5v 4a barrel jack power supply on jetson nano

Does 5v 6a barrel jack power supply gives more performance than 5v 4a barrel jack power supply on jetson nano?
Is 5v 6a harmful to jetson nano?
does jetson nano draws only 4a even if it is connected to 5v 6a barrel jack power supply?

Jetson nano only draws the power it needs for the specific use case.