Nobody can say how successful IEO will be at the beginning of the project but the most important thing to consider is the exchange the project is taking place.
The reputation of exchange site can determine how successful the IEO that will be launched on its own platform. You can create a comparison between latoken IEO and major exchange site IEO to know the differences between both platforms. Exchange site is just like a judgement to determine whether such ico will be successful or not.