Why does the Hercules need more thrust from its engines than the twin otter?

The Hercules requires more thrust from its engines than the Twin Otter primarily due to its larger size, heavier payload capacity, and greater mission capabilities. As a military transport aircraft, the Hercules is designed to carry larger loads over longer distances and in more challenging conditions, necessitating more powerful engines for adequate performance. Additionally, the Hercules often operates from shorter or less improved airstrips, which further demands higher thrust during takeoff and landing. In contrast, the Twin Otter, being smaller and designed for regional flights, operates with lower thrust requirements.