Guild Wars 2

According to the wiki, there are three traits which give +150 to an attribute for nearby allies in combat.

Spotter (ranger, master, +150 precision)
Empower Allies (warrior, adept, +150 power)
Strength in Numbers (guardian, adept, +150 toughness)

Given the identical function of the three, they should all be adept-level traits.

As an alternative, Spotter could remain master but its attribute bonus increased to, say, +250 to reflect it being a master-level trait. Though mathematically, even at +250 precision its effect on offensive DPS is about the same as +150 power in most cases.

I too, thought this was odd that a ranger had to invest more points to get a trait that a warrior or guardian could get for less. Despite them all having different effects, I agree that it should be adept or be given a stat boost to compensate. +1

This should really be put into the ranger discussion group rather than game bugs ^^.

Although I agree with you, there is a parallel with elementalist, where the 50% reduction in falling damage is traited at master, and every other class it is traited at adept.