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

Yes, blue spells are also good against Warriors, especially if their defense is high. The higher the enemy's defense stat, the more effective blue spells are compared to other types.

I completely agree, that's right! (I just wanted to write "right," but they wouldn't let me – apparently, there's a character limit! :))

Found a good review on the topic: http://www.youtube.com/watch?v=3s_qjKSpL_o

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.

Unfortunately, not all upgrades turned out to be balanced, and this is one of many such cases where Forest Archers are almost always better. Higher damage, initiative, shooting without penalty (even if only once), plus knockback and ignoring half of the armor. Thanks to ignoring armor, they can penetrate high-level creatures with a single shot better than Archmages with two shots, even with a direct shot. So, even with a bow, it's not always worth choosing Archmages, as they will only be better at penetrating low-level creatures with little defense, and without a bow, the choice is even more obvious. And if you add that instead of a bow (with which Archmages can at least compete with Forest Archers), you can equip the same Staff of the Underworld and reduce the enemy's initiative, then again, the choice is quite obvious. Among such unbalanced upgrades, you can also include Demons for Inferno. The rest, even if they are unbalanced, are not to such an extent.