Board Thread:Fleet's Prepared-ness/@comment-28096035-20160424100316/@comment-26567923-20160424102947

more lv = more evasion + accuraccy. technically you can sortie low lvl ship, but they also suffer low evasion and accuracy.

that means lower chance to kill / survite boss node, and because of lower chance you need more resources to beat the boss. in other words, using more resources to beat the map