Certainly we have our differences with confessional Lutherans. It seems evident that they determined long ago to view the confessional Reformed as Schwärmer. (fanatics, Anabaptists) disguised as Protestants or evangelicals (in the old, 16th-century sense). I must say that, in turn, it appears that some Presbyterians (as distinct from the continental Reformed) seem bound to reciprocate by finding ways in which we disagree with the Lutherans even where we don’t. Some seem bound to construct a distinctly “Reformed” doctrine of justification and the like. Frankly this is more prejudice than history. As a counterbalance we might consider an interesting ecumenical adventure in which the author of of the Belgic Confession was involved. Wes has the story. It’s only circumstantial evidence but it’s interesting. We might also look at Jill Raitt’s brilliant account of the dialogues between Beza and the Lutherans at Montbeliard to get a clearer sense of where we actually disagreed in the late 16th century.