The only way to distinguish which was first is either a decentralized objectivity which is the longest-chain-rule, or a centralized objectivity such as community/developer checkpoints.
There is a 3rd way, Economic Clustering and in Nxt it's implemented in a way that doesn't require human intervention after initial setting.
Thus you mean centralization. Otherwise you get non-convergence of consensus (e.g. three clusters of 33% each). You keep making the same design error, which you've repeated with Iota.