On a more serious note, these dropships are substantially larger than the Space Marine Thunderhawk Gunships, being large enough to house a double-decked design, in which the upper deck house the infantry units while the lower deck carries the more heavier equipment such as tanks and artillery, quite like the Manta.
The Devourer is designed for planetary landings and deployment, with the armoured front section of the vessel opening up into four sections, deploying a ramp so that the onboard vehicles and infantry can quickly depart, this in turn makes it both efficient in terms of deployment organization and quick in terms of deployment speed. The Devourer itself is not designed for combat, but is equipped with two heavy lascannon turrets and missile launchers in self defense.
