Ancient? Same rolls? Potion snap-shotting stricken? Doing serious fishing? Hellfire? Probably some other snap-shotting I don't know/care about. Paragon? Gem levels? Follower gear?
There's quite a bit that goes into it aside from same name gear in the right slots.
I can match Quin69's gear, but I don't have a level 80 BotT or 1000+ paragon giving me a natural sheet toughness of 40M, among other things. I also don't know all the snap-shot or grouping tricks that they use when they finally get a good grift.
I'm boring, I just try to better than my previous best. But I've watched the occasional runs and I do read a bit of the high level discussions. Emulating the broad strokes of their strategies has generally helped me out.
not exactly the same of course
using pain, stricken, taeguk.. about 50 on all 3
ancient head, body, pants, f+r with str, cc, ar on both
Ancient ik wep 4k damage (it's not great), strong arms
furnace, lamentation, unity ring
hf ammy str, 100% cd, 10 cc with zerker rage (it's my best one)
using, superstition, rampage, ruthless, weapon master