When it comes to determining the strongest hero in the DC movies, there is no definitive answer. Depending on the context and situation, any of the three main heroes, Shazam, Superman, or Wonder Woman, could come out on top.
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Shazam is not only the wittiest of the three but also the most powerful. He is powered by ancient gods and has the ability to manipulate magic, giving him a wide range of powers. He can fly, shoot lightning bolts, control the elements, and even time travel. He is also incredibly strong and able to take on powerful foes even without the help of his magical abilities.
Superman is the most instantly recognisable of the three. His powers come from his Kryptonian DNA, giving him superhuman strength, speed, and durability. He can fly, shoot heat beams from his eyes, and is even able to see through walls. He also has the ability to travel through time, which gives him an edge over his opponents.
Finally, there is Wonder Woman. She is the goddess of war and is the most skilled in hand-to-hand combat. She is able to block bullets with her bracelets, deflect energy blasts with her shield, and even has the ability to fly. She is also incredibly strong, and her lasso of truth can force people to tell the truth.
Each of these heroes has their own unique set of powers and abilities that make them formidable opponents. It is impossible to definitively answer the question of who is the strongest DC hero in the movies. Each hero has their own strengths and weaknesses, and in the right circumstances, they could all come out on top.