Has anyone documented the maximum damage caps per class?

[DeathsSilkyMist]

I noticed something interesting today. It seems that in addition to the weapon damage caps that unlock as you level up, there is also just a maximum damage cap that you cannot go above (similar to pets).

With a 20 damage weapon, my damage is always capped at 84, with 255 STR, Avatar, and 200 offense.

With a 18 damage weapon, my damage is always capped at 76, with 255 STR, Avatar, and 200 offense.

With a 15 damage weapon, my damage is always capped at 63, with 255 STR, Avatar, and 200 offense.

When my strength is 200 and my offense is 200 (no Avatar), I do 80 damage with a 20 damage weapon. This matches the formula Weapon Damage * (([Offense Skill] + [STR]) / 100), and Shamans don't get any damage bonuses.

If there wasn't a damage cap, I should be doing at least 90 damage with 255 STR, and more with Avatar.

This means the maximum damage cap for 60 Shamans is 4.2 Damage per 1 Weapon Damage.

I couldn't find this on the wiki, so I was curious if this was documented somewhere, or if nobody has realized this yet. This is definitely different per class, so it would be interesting to know what the caps are for each class.