The most IMPORTANT thing is the SPEED… It is normally if a unt is at longer distance, it to have a chance to survive.
But at that pictute, I see units who use similar weapons as Bombard cannon, Elite Cannon Galeon and Turtle ships, who have DIFFERENT speed of projectiles…The projectiles of Turtle ships are 4 times faster than Elite Cannon Galleon and the Turtle ships bombs are 2 times faster than Bombard cannons. I don’t know any battle where the Korean Turtle ships had faster bombard cannons, than all other civs.
I think, they must be EQUAL - projestiles of Turtle Ships, Bombard cannon and Elite cannon Galleon… May be - about 4.