[The Saucepan Man]

Yes, but since Imladris resisted attacks by Sauron's forces just as Lothlorien did, Lothlorien's resistance in itself tells us very little about who was the more powerful out of Galadriel and Elrond. If anything, the fact that Imladris had a much smaller population tends to indicate that it relied much more on the powers of its "ruler" (ie Elrond) than on force of arms in its defence.