My Strength Stance buff reads +20% to both Induction and Focus Bow Damage. I think your non-imbued offhand wasn't equipped if it's only showing 10.838?
Absolutely, this screenshot was only here to show data consistent with my calculations.
+10.83% to Quick Shot damage and +9.31% to Swift Bow damage is what you should get given +20% from Strength Stance (so trait and uninmubed weapon) with relevant traits and legacies.
Gabrediel, Original Challenger of Sarouman | Gabramir, Original Challenger of Gothmog Unquale - Sirannon [FR]