What are the advantages of Sylvan archers compared to Master Archers?

First of all, the Forest Archers shoot without any penalties. Next comes the damage they deal. And that's 8-9, which makes them the strongest troops of the 3rd level. The "Empowered Shot" ability pushes the unit back one cell, but for some reason, it doesn't stun. With such characteristics, the Rangers (and other heroes as well) will clear the territories faster. But if the hero has found the "Unicorn Horn Bow" artifact, then the Forest Archers won't be very useful, so we upgrade them to Master Archers (because of the double shot) and continue our travels and battles.