Thanks Kellysheroes, I thought I had read through the entire thread.
That said, a non-cold-war game always seemed obvious to me given BFs propensity to stick to history. In my mind one way to whittle down the statistical pool of potential top-5 titles is to only include historical wars/theaters. Removing cold-war-era wars and theaters still leaves you with a large number of marketable options, but far less than "anything".
For pure marketability, appeal, range, and depth, something modern and relatively recent seems the obvious choice in my mind.