Apparently, a big distinction between Bybit vs. BitMEX is that you can, in reality, deposit altcoins into Bybit after which you can use those altcoins to trade with. That is impossible on BitMEX in which you can only deposit Bitcoin and use Bitcoin as margin for altcoin investing. Bybit http://francisco4320w.blogsidea.com/6305151/the-bybit-diaries