It is not possible to definitively state that one filmmaker is objectively "greater" than the other, as the assessment of a filmmaker's greatness is inherently subjective and can vary based on individual perspectives and criteria. However, it can be useful to examine the body of work and impact of both James Wan and Steven Spielberg in order to gain a better understanding of their individual achievements in the film industry.
James Wan is a Malaysian-Australian film director, producer, and screenwriter. He is best known for his work in the horror genre, including the "Saw" franchise and the "Conjuring" series. He has also directed several other films in various genres, such as "Fast and Furious 7" and "Aquaman."
Steven Spielberg is an American film director, producer, and screenwriter. He is widely considered one of the most influential filmmakers in the history of cinema, with a career spanning several decades. Some of his most well-known films include "Jaws," "E.T. the Extra-Terrestrial," "Indiana Jones," "Jurassic Park," and "Saving Private Ryan."
In terms of their impact on the film industry, Spielberg can be seen as having a more far-reaching and enduring impact. He has directed numerous films that have become cultural touchstones and have had a significant impact on popular culture. Additionally, his films have often pushed the boundaries of special effects and technology, helping to shape the way that films are made today.
However, it would be inaccurate to discount James Wan's contributions to the film industry. His work in the horror genre has been particularly noteworthy, with his films often receiving critical acclaim and commercial success. Additionally, the "Conjuring" series has become one of the highest-grossing horror franchises of all time, and has helped to re-popularize the horror genre in recent years.
In conclusion, while it is not possible to definitively state that one filmmaker is objectively "greater" than the other, both James Wan and Steven Spielberg have made significant contributions to the film industry and have had a lasting impact on popular culture. It is up to individual interpretation and preference to determine which filmmaker they consider to be "greater."