Produce a digital image depicting the Avengers and the Justice League in an epic confrontation. Utilize a dynamic composition that highlights the main characters from both groups, such as Iron Man, Captain America, Thor, Hulk, Black Widow, Batman, Superman, Wonder Woman, Flash, Aquaman, and Green Lantern. Ensure that each character is portrayed with realistic details, capturing their distinct features and facial expressions. The scene should be set in a destroyed urban environment, with debris and special effects indicating an intense battle underway. The heroes should be in action poses, conveying determination and heroism. Employ advanced lighting and shading techniques to create a dramatic and immersive atmosphere. The final image should convey the magnitude of the conflict between these iconic superhero teams, with quality and details rivaling those of high-quality cinematic productions.