After some time in the glass, the two become more and more similar.
Parallel tasting 2012 vs. 2016:
old: very sweet and pleasing, honey, malt, toffee, a little orange, peach compote, only very little smoke, dry, inconspicuous
new: here the smoke is clearly in the foreground, dirty, organic, in the background malt and caramel sweetness, overall more intense
Here are both much more similar: tasty, round, a hint of orange / peach jam, malt, toffee, milk chocolate ... then clearly the smoke on the tongue, earth, leather, pepper, the new a whole lot more intense, sharper, bitter
medium long, old: very balanced between chocolate sweetness and bitter / peppery, new: the bitter again and sharp after