It is a very great surprise to hear that a coins at the current market situation give returned of 800% and that coins is an ieo and not even existing project that we are familiar with! This will make me to start keeping eyes on this IEO projects especially those one louch at binance.
Well, that familiarity is exactly what got them that much percentage, as against what you said, harmony was already known long before they team chooses to switch to IEO, in fact, some bounty hunter will testify that they participated in their ICO shortly but not long before the decision was made to switch to IEO.
So people already knew how solid this project was, and the moment it was announce that they will be on IEO people had already programmed their mind towards it.The reason why some of us didnt get the chance to invest is because you already know how this thing works, there is always investment pressure which made the queue for this project too much for some of use to invest.