numeri / arithmoi

[Nathan Ross]

So how is it clear that an arithmoi is equivalent to a numerus?... This is why additional research on this topic is needed

Wasn't my reply to Steven's question (here) sufficient?

I agree that the numerus/arithmos is an interesting and important factor in understanding the late Roman army - although also a very inexact term, it seems! - but I really don't see any reason to think that the Greek and Latin words were referring to different sorts or sizes of unit.

Unless, as I say, there is some evidence to suggest otherwise - is there?