This work is part of the debate regarding the possibility to judge the creativity of a particular object (an idea, a painting, an industrial product, etc.), by expert or nonexpert raters, with the same results or not. The study is focused on the concept "complexity of judgment" considered fundamental to fully understand the problem. The objective is to discover the main reason of the match between expert and nonexpert ratings in assessing creativity. Results suggest the situations in which such ratings tend to converge or diverge, underlining the fundamental role played by the complexity of judgment. In addition, some suggestions for further studies are presented, aimed at assessing the generalizability of the proposed considerations in other context or in adopting other creativity assessment techniques.