Which is better ? Unreal Game Engine Or Unity ?

As always there's an SO thread discussing just this:

http://stackoverflow.com/questions/1901974/unreal-engine-3-vs-id-tech-3-vs-unity[^]

Consider this:

class GameEngine { }
class UnrealEngine : GameEngine { }
class UnityEngine : GameEngine { }

static void Main(string[] args) {
    GameEngine engine1 = new UnrealEngine();
    GameEngine engine2 = new UnityEngine();
    if (engine1 > engine2)
        System.Console.WriteLine(
            "{0} is better than {1}",
            engine1.GetType().Name,
            engine2.GetType().Name);
    //else //...
} //Main

Compilation error: "Error 1 Operator '>' cannot be applied to operands of type 'GameEngine' and 'GameEngine'". Comparison operator not defined.

Go define it. :-)

Why? Read the following to understand the background: http://en.wikipedia.org/wiki/Partially_ordered_set[^]. :-)

—SA