Yes, Instead of us, they are doing the background work in the market for the IEO. So it is very good to invest in Binance IEO because i won't bother much about the other exchange whether they will do the research part or not. Binance will do some work before listing about the company.
I doubt every exchange will do background work seriously other than binance or Bittrex, which is why I believe we ourself should do the background research so that we can get the best result and be safe while investing.