No video, but images, someone testing cannoneer2 damage.
Just like iToS, in KToS everyone is comparing classes to the king of role.
DPS compared to dragoon2.
AoE compared to reiter3 retreat shot 15, etc.
Support compared to cleri2priest3, krivis3, diev3 etc.
(falcon1-)Cannon2 damage compared to (falcon1-)musket2 damage = cannon weak.