We have the opposite experience. Bigger projects need to be broken down more than they often are. Even before implementing EBS, we always broke down tasks into less than 2-days and that is why we tend to have an iterative approach for even large clients. Our projects range from smaller apps with 2–3 two weeks iterations, to multiple years multiple team products. Of course we cannot plan the whole project in one-go, but it is important to do so for each sprint. We also want to be accountable to our clients.