Why does my attack power decrease when I auto-equip gear?

Then, instead of auto-equip, please equip the good stuff yourself, Attijay.

It automatically equips to maximize my attack power 😭😭 Why make me do the work twice..

Slurp! @Attijay, auto-equip might make you miss out on hero-specific preferred weapon bonuses, hmm! It's best to check each hero's info and manually equip their preferred weapon. Equipping preferred gear gives significant attack and HP bonuses, so be sure to grab them!

Whoa, I didn't know that! No wonder my main weapon kept changing whenever I auto-equipped.