Single target Arms colossal dmg is bad, what am I doing wrong?

[modest grotto]

https://www.warcraftlogs.com/reports/aMdGAV1RjTKpJ9v8?fight=3&type=damage-done

Can compete with other dps on aoe, ST and low target # is embarrassingly bad lol

[bronze crescent]

Colossus boss dmg is ass

I'd say go slayer for most keys

https://www.warcraftlogs.com/reports/WFpcJqMv3y7jxGQK?fight=2&view=rankings&playermetric=bossdps

Your overall will be lower, but boss damage and prio dmg will be good

[modest grotto]

I got 4 set now, so prio should be better with 3+ targets?

But yeah seems while im sure I can improve its just the spec mostly lol

[zealous matrix]

yeah, single target dps as colossus is really poor. Any time you can pull trash onto the boss it lets you funnel (ie: increases your single target by doing AoE), but it's expected to be near tanks.