This is often a point that is overlooked when people focus too much on the skill simulator alone when making builds.
Refer to the following picture:
http://truth.bahamut.com.tw/s01/201509/6e1f5871655d59e0a622fdfdd88b39b6.JPG
From the top row to the bottom row:
- Slash
- Stab
- Strike
- Magic
From the left column to the right column:
- Cloth armor
- Leather armor
- Plate armor
- Ghost armor
So what this table is saying is this (from top row to bottom row):
- Slash damage does 50% more damage to enemies with cloth armor, 50% less damage to enemies with plate armor and 50% less damage to enemies with ghost armor.
- Stab damage does 50% more damage to enemies with leather armor, 50% less damage to enemies with cloth armor and 50% less damage to enemies with ghost armor.
- Strike damage does 50% more damage to enemies with plate armor, 50% less damage to enemies with leather armor and 50% less damage to enemies with ghost armor.
- Magic damage does 50% more damage to enemies with ghost armor.
Conclusion:
It does not matter whether your awesome skill (eg. Seism) that does slash damage does 1746 damage on the skill calculator, if you are hitting an enemy with plate armor you will do HALF DAMAGE. Hence it is more important to a variety of different skills that do different types of damage (even if it is just auto attack), in case when you face the wrong armor type, you can still use different skills to do different types of damage so you’re not gimped when fighting these types of monsters or players.