Let's explore the question first. Let's wait for the first results. What would definitely understand that of the 2 types of project is better. I think if the project is not well-off, then nothing will save it.
Only time will tell if IEOs are really more secure or are subject to the same problems are ordinary ICOs. The due diligence exchanges perform may not be enough, just like pool due diliegence. An investor must always do their own due diigence.
I think both IEO's and ICO's are almost identical when its comes to the probability of them conveying investment risks just like traditional companies. What matters most is the kind and quality of projects we chose to become part regardless whether they are implementing an ICO or an IEO and most importantly, we should always be vigilant for any activity from the team that shows signs of mismanagement because most of the time, projects failed because of that reason.