James,
Good discussion. You are right, it is totally subjective. I just sold an early French fowler that was as beautiful, graceful and as light as you could want. I have seen some "lighter" English pieces, but, for the most part, they seem to be heavier built. Not a hard and fast rule but just generally the French guns are lighter built. I think this might account for the fact that the French trade guns were preferred by the Indians. I happen to like the lighter built guns.
Look in Tom Grinslade's book and I think the New England fowers, influenced by the French are more "lighter" built then the English style fowlers built near New York. To me, the English style fowlers are more clunky looking. But that's just me.
They are all great guns, the French and English were fine builders. Your comment on the modern fowlers being built more like rifles is right on the money, in my opinion.
Al