In the literature, automatic summarization and automatic titling tasks are often merged. It seems that a short summary can be considered as a relevant title. But can we compare a title and a summary without having previously studied their criteria? This study aims at positioning the emergent task of automatic titling with regard to automatic summarization task. In this paper, we define a set of criteria according to the summary and to the title, and we analyze the results obtained with our method of automatic classification. This analysis enables to report real objectives of both tasks and to validate their relevance.