The Finnish Phoenix
BTW i find it quite hard to lose to BB with lbma, in worst case scenario we are even. the stun isnt long enough to kill me and the 1st skill of lbma will always oneshot a BB after a specific hp threshold. BB can reflect a max of 1k hp, which is not enough if reflection is kept for later and if its used early will not be up when the oneshot is coming. multiple stuns in a row may help but still may not be enough. the thing is though, that timing against BB is crucial and if you are not good with timing your skills, you can die every time. now this match up requires a lot of skill. a concept which some ppl of the pvp community praise yet never use in fights with classes not much stronger than No Class.
Interesting, I guess most of the (L)BMA's I've fought either aren't as knowledgeable of the class as you are, have a lesser/no amulet, or a combination thereof. I don't have LBMA myself, but UOK has a massive success rate against it thanks to Grand Sweep's debuff and the class's general speed and accuracy.
My goto class for countering Artifact Hunter is Evolved Shaman as it takes away its crits and disrupts its rhythm, keeping them from chaining their Wards by slowing them down and stunning them. Evolved Shaman is ruined by BlazeBinder though, because none of Blaze's skills depend on crit chance.