Complete obliteration?
Sauron felt it was rather risky to take the magic cannon after hearing Sika's words. Defeating and obliterating an army were completely different concepts, and the cost for executing them differed greatly as well.
"Relax, you see that big guy over there?" Sika pointed at the Metal Titan.
Sauron nodded. He envied it for being able to transport such huge equipment.
"It is not for pulling carts. The Metal Titan is a heavy piece of equipment for crushing the enemy."
While Sauron was a warrior, he had made impressions of Metal Titans. The reason Qin created war puppets was because humanity ordered Metal Titans around to battle, and it was a concept that had survived the ages. The shortcoming of the Metal Titan was that it was incapable of transformations, unlike the Mechanical Soul. If the Mechanical Soul were there, it could have transformed into a mobile turret, carrying the huge magic cannon and running around with it.
