The issue is, specs often don't tell the whole story. Look at phones for example. The Pixel is still according to a lot of reviewers the best every day phone. You can find other phones with similar specs for half the price, but the hardware/software integration is what really makes a big difference.
I'm not saying the extra 600$ is worth it in this case, we'll have to wait for reviews to know that, but generally you're paying for better build quality, integration, support and form factor.
I'm not saying the extra 600$ is worth it in this case, we'll have to wait for reviews to know that, but generally you're paying for better build quality, integration, support and form factor.