maya to sabstance painter baking issue

hello

i try to learn how to make game assets and i made my models in maya i make them on top of each other same the same translation & rotation and scale

i named them the same with suffix _low_high but when i import them into sabstance to bake the details the

result is bad can anyone help me to know why this happen please ???

this is the result on sabstance painter

and the others photos how they match each other in maya