To decant or not, part two

2005 Duckhorn, Napa Valley Merlot;
Deep ruby, chocolate, vanilla, blackberries, coffee and mocca. Sweetish fruits, ok acidity, ripe tannins, good length. 86

3 hours decanted, left in cool room as before.
Swwt feel, plums, blueberries, anis and vanilla, alcohol shows, ok acidity and tannins, sweeter and bigger with air, lacks nuances.... 79