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.
It is undeniable that IEO's on large exchanges is more desirable and trusted than on small exchanges. I followed IEO on Binance and followed IEO on P2PB2B, I compared that coins/tokens of IEO on Binance were able to last longer (prices did not immediately fall "Dump"). IEO's on a small exchange on average very quickly becomes worthless than IEO's on a large exchange.