Board Thread:Question and Answer/@comment-31961476-20170515051802/@comment-31916254-20170515110603

Salvo damage is based on individual card attack and multiplied by the amount of % based on the salvo skill.

So if you have card with 20k base ATK and a card with 40k, 20k will deal half the damage compared to the 40k card.

As for the point of Int+ and above, right now Mynet seems to be still struggling to balance the new EH (this is like 4th event with it) and slowly making progress towards making higher difficulties worth it. Right now you get something like 2-3x the awakening materials and Medals out of Adv EH compared to Int.

Also, every second event seems to be based around EH giving the "best" card and amalgamation materials only obtainable from Adv and higher. During that time most people will go for the card rather than ranking making it much easier to get ranks for people who can't clear Adv yet.