system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars]What is the benefit of an AT-AT over a conventional APC?

I've been reviewing battle footage of the battle of Hoth as well as the battle on Endor.  I'm sure most of you have noticed some pretty glaring disadvantages to using a troop transport that uses legs rather than old fashioned tank treads or hovering technology. Namely, the high center of gravity and relative slowness that makes them extremely easy to out maneuver and trip.  So, why transport your troops in these behemoths with legs rather than treads or hover?
gpt
So we're comparing AT-ATs to tanks and speeders today.

The advantages of a speeder: Obviously speed, since an AT-AT only moves at 40mph, an tanks usually top out at 70 or 80. Speeders can travel at over 200 mph. And as long as the terrain is flat, what the terrain is made of is irrelevant - dirt, sand, snow, calm water. However, speeders can't carry anything. Most speeders are just two-person vehicles - a driver and a gunner. Somewhat like a Earth Hummer with a .50 cal machine gun.

Tanks are slower, but faster than an AT-AT. They usually have full-turret heavy weapons, so are better than the other two options for field of fire. Way more heavily armored than a speeder, and comparable to an AT-AT. The most limited of the three when it comes to terrain, and their treads are not armored and can be blown off with hand-held heavy weapons, immobilizing them.

And then, the All-Terrain Armored Transport. It easily equals the firepower of a tank with its two MS-1 linked heavy cannons, and it has two independant pairs of FF-4 repeating blasters mounted on the sides of the head. Far outranges a tank or a speeder because of it's height - this also gives commanders an advantage of overseeing the battle, rather than being stuck in a tank at ground level.

A speeder has two people. A tank-transport (say a Warhammer Land Raider) has 10. An AT-AT has 40 in full battle gear, in addition to the 3-person crew. It also carries 5 speeder bikes for scouting when the troops disembark. A variant cargo-outfit can carry two AT-STs instead. They can handle a variety of terrains, including being able to talk in water as deep as their hull.

And they scare the piss out of people watching them come at them.