if they look the same and create same kind of supers then that should tell you they are the same kind. If bred together and create a super than that should tell you even more.. But if they creat different supers then you can say they are different.. They both make black snake!! They both look the same!! Don't force them to be different.
They dont both make a black snake, one makes a brown snake and one makes a black snake. The pewters are also very different as well as the combos with lessers and other morphs.