The White Ring... principal of the Three=? UT

[The Saucepan Man]

But the thing is, how do we know that Imladris had a smaller population?

I don't think that we really do. I was making an assumption, although a pretty fair one, I think.

But, either way, it doesn't take the discussion much further forward, since the point I was making was that the relative capability of Imladris and Lothlorien to defend themselves against Sauron's forces does not really (in itself) assist much in assessing the relative power of Elrond and Galadriel.