It's 10 amps total. You can draw 10 amps off one terminal, or split it 6 / 4, or any combination, but it's 10 amps for the whole unit, shared between two terminals.
I've had motors drawing around 11amps, and you can litterally hear the fan on the power supply slow down due to lack of amperage. Not something I suggest doing, but it's not going to poof if you draw it's max for a second or two.
I run both a T-35Stealth & A CE PitBull off my N-Power no problem. I just cant charge & run a motor at the same time. I usually end up drawing to much, and the PitBull stops it's charge due to lack of amperage. hehe..