Yes, that's right.
I'm not a rivet counter and I don't look for extra details. I can recognize well detailed brass models.
I think it's a set: locomotives, wagons, scenery... For a layout I like to create an atmosphere. All must be featured at the same level of detail.
Details are important but I think weathering is more important (excellent slow running too).
And the low price of the Atlas, Weaver... products is very attractive.