There is on combo that is better, Vial-BLF-leg Daggers, seriously Nok rogues are nothing compared to them, so be grateful Molten wont release the daggers.
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If a rogue can use ambush with No'Kaleds (which are axes) then there's more at work than just the items :P
In good old Cata, rogues can actually play with Nokaleds, VoS, BLF, AND t13 hc, since CoS/Vanish will get them out of most tricky situations.
That said, hunter with vishanka, vos, and t13 isn't that far behind, nor is literally any class with their BiS Weps. I actually kind of miss Cata now thinking all about the good old days :D