I really think these IEO thing is only good for the top exchanges and these is because they have the liquidity and the traders to pump a coin after listing, which is why their IEO projects are usually successful.
But the smaller exchange don't have the same and their IEO success rate is no way near the top exchanges. Maybe 2 out of 10 IEOs conducted on the small exchanges would succeed, while top exchanges boast of a success rate of like 9 out of 10.
This is true happened, even IEO arise at this season since that most of the exchange under IEO are just small and not popular yet, like Ozinex, Vindax, Exmarket, and more it doesn't mean the token project will succeed, of course not! but it is still depend on the updates of the project even it is ICO.