Both bitUSD & bitCNY haven't been referencing real price feeds from CEX for months now.

-Good afternoon. Is this the Executive Director of the New York Stock Exchange?
-Yes. Who is talking?
- It bothers you from Poloniex. It will be better if you start calculating margin positions on your stocks taking into account quotes on our exchange. There the bitcrab does it. What are you better at?

why is our exchange worse?
it is possible for the NYSE  also calculate the margin position for feed from Poloniex?
Why not? Really?