Guild Wars 2

Stalwart Defender – Gain 180 additional toughness while wielding a shield. Shield ability recharge is reduced by 20%.
Strength in Number – Nearby allies gain toughness based on your effective level.

I don’t see why these two are in the same tier in the Valor line, which mean you can only pick either one of them.
Abit redundant in effect, but Obviously, anyone in their right mind would pick strength in Number over the shield trait for AOE buff even the effect of shield trait is slightly better with the number. The shield trait is without a doubt never getting picked (not like shield is terribly effective anyways). I would say move the shield trait to a different line or at least a different tier (adept)