In only nine words you've pointed out how unbalanced the MP is....
Thats the point. It is by Apple for Apple. They don't care about Adobe either. When did 'balance' enter the picture? The Mac Pro is not a balanced platform. Don't care if you need or want dual AMD's you need to add them to balance your cost. Mac Pro users can't omit. That's the cost analysis point and the truth in previous posters claims. That others just brush aside aspects they don't need or want and say it is comparable. (ie . I don't need or want dual GPU's) It is only then comparable by you for you. OS X users do not have the HW luxury of picking or choosing. Now price it out with Dual AMD workstation GPU's SSD's etc and get a price total. It will be similar or higher than Mac Pro. I don't need or want it either but Apple isn't exactly ripping people off here. As always, buy low end and Apple takes your money, buy high end and you end up with a pretty good deal. In the middle will net you average pricing next to PC.