Firstly, he is 180m tall, and there is a building irl that is 180m tall. Here it is for reference.
It TOWERS above these buildings as you can see. And, remember the colossal titan from AOT? Sanjuan Wolf is 3 TIMES his size, the titan is only 60m tall. Here is a size chart for others vs him.
The characters are Wolf, Oars, Titan, Rock to the right of the titan (i think rock is the giant in punk hazard), Dorry to the right of Rock, Big Mom, Kaido, and Luffy, who is invisible. He towers above all of htem. Fighting him might just be like punching a wall.
