Some project can perfectly work in both option, but if you want to focus in one exchange only then you have to choose what's the best for the platform depends on the services you are offering. Both have their own pros and cons. Actually investors doesn't focus on the exchanges itself, they focus more on the service you are going to offer because investors know how to diversify, if a good token is listed on DEX, then they will buy that and if the one is listed on the CEX, they will also buy that because its the trend and they see true potential on that project. So better to focus on the project itself, have a good way to introduce that project in the market and for sure whatever exchanges you are going to list, you can still get investors to trust the project.