Did you ever stop to think that the Murcielago is half the price of the Enzo because it is half the car that the Enzo is? Perhaps the Murcielago can come close to an Enzo 0-60, or 0-100, but the fact is that an Enzo is not a drag car. A Ferrari's acceleration is tuned for track speeds, 100-180mph. Top speed is not an issue on a race track, nor is 0-60 acceleration. Downforce, handling, and midrange acceleration is the goal for Ferrari and they achieve it gloriously.
Please do not misinterpret my post as a bash of Lamborghini as I love Lamborghini as well, just note that Ferrari is a far more accomplished marque than Lamborghini.