For a purely exam perspective like an ATPL or something RNP 10 is more restrictive .
It requires more operational equipment .
But practically as other members said its like comparing apples and oranges.
RNP 1 requires lesser equipment because it is intended to be used closer to the ground but requires higher accuracy because it is used in crowded areas.
RNP 10 is used in oceanic airspace and requires more "aircraft side" equipment.