User blog comment:MasterBroccoli/Candidates for deletion/@comment-31031245-20170509172155/@comment-31614236-20170511200633

AoM attack bonus is in this horrible counter system thread. You have a multiplier against unittypes, not that armorclassthing whatever that is. AbstractCavalry (or just cavalry) is a unittype, if you have a 10% Bonus you make 110% damage against units of that type. If you have a 2x bonus you make 200% damage against units of that type. By testing with triggers removing the attack bonus turns the multiplication into a division. so if you have -3x Bonus its 1/3 thus 33% damage or something. -4x makes 25% and so on. They try to have common rules applying for groups of easy identifyable units like cavalry, buildings, myth units, heroes, archers, siege, infantry, ships instead of specific boni against very specific units. Though sometimes you still have some balancing against such a special unit.