Dev wants the best for their project, for it to become succeed including going for the top exchange in IEO but I doubt a new project has enough amount of money for it. No, it doesn't mean they have to go for a shady place like p2pb2b but maybe a medium exchange with a decent reputation if better because IEO can only work if it was holding on a trusted exchange.
I can confirm IEOs at exchanges like p2pb2b, latoken will never have good results because exchanges are hardly interested by any investors and will definitely only cost you more time when choosing invest. I think if you are investing those coins consider selling as soon as possible because the likelihood of losing your money on those projects is very high.