Why would a boss give you pointers? He hired you to do a job. You're supposed to know how to do it. If not, get out, he can hire someone better.
Due to the fact that this game offers an incredible amount of different combinations and synergies between items and classes, a generalized "tier list" is completely useless. For example, Deltro's Cage is very strong if you build yourself around Shock damage, with the soulbound weapon and other Shock PL gear. And that's one of the best builds in the game atm. Nomad's Brigandine is fantastic when you combo it with Offensive Parry, there's even a build on the forums that explains the synergy. And Humility has - among other things - 20% Pierce resistance, and is a 0% light armor, which means that your 3 CON 3 RES Wizard with this armor is suddenly less vulnerable to getting one shotted in a ship battle.
TLDR if this really somehow took you 20 hours, well, imagine you could've spent that time watching cat videos.
So I'm not sure where you work, nor do I care enough to get the details, but your mindset is extremely archaic, unproductive, and hostile. I work at a leading small consulting firm with industry leading clients (which I can't divulge here) and at all levels of our org we coach each other and our clients. In fact, a key piece of our value proposition is our executive coaching.
The next time you come across something you need to learn or could benefit from guidance remember your own advice and see how you fair. Trust is built through vulnerability and looking out for others' best interests, not brutish "know or get out" responses.