why? apples and oranges.
the macbook weighs nearly a pound less, has longer battery life (as low as 6 for one razer model), and it comes (as all apple stuff does) with phenomenal customer support (razer is mail order in us). when you encounter problems, this support is worth the apple tax, in my opinion.
the razer is very nice looking, and obviously better suited for gaming, but buying a similarly spec'd model (mid to upper range) is roughly the same price. the big difference (spec wise) is obviously the processor and graphics; if these are your priorities, the mb is not for you.
the rmb is made for portability first, the razer is made for gaming. nothing to cringe about, just different priorities.