Look like a genuine, proper factory galvanized Chassis and even a snack holder (nla) on the front roll cage.
Good to see that series wheel chocks are compatible with Defenders.
Above all I am most impressed by the way the doors change colors depending on how close they are to other vehicles.
A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.
I don't know about the brakes, only their unreliability.