Yea.., but as these two birds are totally identical (except size) why there're those differences is not clear...It looks to me as if they just set it up with the switches set the other way. So no difference just that on the MCPX you would set Pos 0 were the nano will be Pos 1 and vice versa.
The hold part i'm not clear on.
As Lee stated, it's just where they set it up on the switches. No difference at all and it's personal preference where you put it. And like Lee, I have NO CLUE why you would put 10% on T-Hold. You should ALWAYS put it at 0% to kill the motor.