Hmm, but above you linked the archer's strength to his level, not his numbers.

I don't like pointing out individual words, but I have to -

archery specialists

i.e., the Gremlin's archers are stronger than other archers of most other archery specialists, as they receive bonuses to attack/defense for every second level of the Hafiz, while others receive lower bonuses, i.e., Dugald has bonuses for every third level, Jezebeth for every fifth level, etc., and Vaishana doesn't even need to be considered, as she has a penalty for shooting and a growth of 7.
And the Titan is a strong archer in itself, isn't that obvious?

Dugald can train a lot of archers who are formidable even without a bow.

Dugald, yes, of course, is cool, but he doesn't even need a bow, his archers only need a blessing.

and even then, shooting can be easily countered.

Whether it can be countered or not, the point is about the usefulness of the bow for ranged units; it seems we won't convince each other, and each will stick to their opinion.

learn to dispel charms

As far as I remember, Disruption Ray is not dispelled by either dispelling charms or stone skin.