Guild Wars 2

If the build he is running is your standard Meta Zerk warrior then yeah it probably is enough since loosing 1% of you DPS is enough to make these kind of people flip their..

the point being is people are too focused on dps dps dps so loosing any dps no matter how little is going to drive them mad and complain

Dying 20 times in AC is atrocious. Whatever variation of gears or traits builds, the only difference will be the length of encounter, especially @ introductory easy dungeon like AC.
The longer an encounter, the more likely the chance you’ll encounter those deadly oopsie moments with bad timing on crucial cd, running out of endurance, reaction, lag spike etc.
Just go full ham on dps. This is what this game about in majority, cc and supports are minor stuffs that require precise timing.
Take a good look at silverwaste mobs, you wanna kill them asap. Won’t be any difference @ HoT xpac too i bet.