Nah i quit diablo3 that shit got too ridiculous after level 600. It started taking me over an hour of doing public rifts as fast as humanly possible just to get one single level. To break the leader board, you truly do need those extra 200 levels from 600-800 to max yourself out, and you need another 200 to 600 levels to get the extra damage to be able to edge out the people on the leader board. I'd say the only way I'd possibly be able to get on there is level 1400+, with a nearly maxed ancient set of gear, in the most perfectly rolled rift with the perfectly rolled monster types, without making a single mistake focused and dialed in like im on Adderall, and even then you have to count on the right shrines being at the right place at the right time. All that goes right, you might have a slight chance of clearing t73+ with seconds to spare.
What's the point of spending like 500+ gameplay hours doing the same shit repeatedly just to do all that? I'm pretty sure all these Koreans are cheating / botting anyway