I think Quickfire doesn't work.  When it activates, it makes damage = 0.  If you look at the description of units during battle, you will see two -50% to damage due to "quickfire".  I am going to try removing

<GameModifier>
<ModType>Unit</ModType>
<Attribute>AdjustUnitStat</Attribute>
<StrVal>UnitStat_Attack_Physical</StrVal>
<StrVal2>UnitStat_IsBow</StrVal2>
<Duration>5</Duration>
<Multiplier>0.5</Multiplier>
</GameModifier>

From Quickfire_Ranger_Ability in CoreSpells.xml