Way to go here. I don't trust exchanges to handle tokensales. I mean I trust only one due to their position globally in world trade and it'd only Binance. But trust me no other exchange come close. Only 1m tokens sold in IDCM. It's going to take some while to hit hard cap target.
Many projects succeed to their token sales with the top exchanges like IDCM so that we can't deny that great exchange have a big part of it when the token sales of the project is succeeding and it's less risk if they do their token sales in the exchange and a lot of investors will invest if the exchange have a high trust rating.
There's no doubt that the exchange contributes to a large extent in the tokensales, this explains why the global cryptocurrency exchange like binance and bittrex, tend to complete some tokensales within few minutes. The number of users as well as the reputation of the exchange comes to play when a tokensale is handled by an exchange.