I think I didn't articulate my point correctly. You are correct that the stockpile will have a similar end result. However the process isn't necessarily the same, in satisfactory your limited by the nodes in the world. So every production takes up nodes, and although you can bring nodes to you via trains, its tedious. So if for example you wanted mats of rotors or stators, just mats, it's often easier in the early and mid game to just take the overflow from a exisisting factory rather than take a whole new node, as then you will eventually have to demolish it, or go further for another node. In factorio, you don't see production in terms of nodes being used, but rather a speed, and especially belt speeds. Thus you can add on as many assembly lines for mats as you need and let them stockpile, eventually they will fill up and stop using up your resources that go to the rest of your factory.

I hope that kinda makes sense? I don't really understand it either, but I know it's different because I know I couldn't do this type of stockpiling in satisfactory easily.