Is MM just superior at any ilvl?

I don't know guys I might be just bad at hunters but I just keep losing at MM hunters with noticeable worse gear.. I'm 4k gs ATM (barely have 2t9 pieces) but I keep losing to 3kish MM. Udk if it's cos the fights are short or what, also freaking lock and load never procs on bosses not even RDF .. it does on mobs though and I'm talking with the freezing trap ... is that bugged? I just feel black arrow is weak af, I don't want to go MM without arp but damn .. ty anyways :))

You should be using explosive trap with Explosive trap glyph instead of black arrow

I know but what about bosses? for example in FoS/PoS/ToC and many HC's bosses just keep moving

MM performs very well when you stack agility.
You start stacking arp once you reached ~450 passive arp.
No need to play SV to compensate.