Well, you could probably set it up that way, it would take a bit of work to only allow users to see there own posts. There are several ways to accomplish this in WP, but you’d need to look into that more. But basically, unless you’re only going to have a singe set of values for the calculations, you’re going to need someplace for ACF to store values and ACF only stores values withing the current system created by WP which means posts. If you want to store them in some other way then ACF might be the wrong tool to use.
