Final answer:
The blue guy wins because the angle at which he pulls the rope is more advantageous.
Step-by-step explanation:
The blue guy wins because the angle at which he pulls the rope is more advantageous. When the angle of pull is more vertical, the force exerted by the blue guy has a greater vertical component, allowing him to pull the red guy in the desired direction more effectively. This is known as the vector component of force. Even if the red guy is just as strong as the blue guy, the angle at which he pulls the rope may not be as advantageous, resulting in the blue guy winning.