Super AMOLED -> Comparing the SGS2 screen to my Xperia Arc screen, I prefer the Arc.
Higher Pixel Density -> False, because if it's 4.7" and 720x1280, it will have a lower density then smaller screens with the same resolution
Faster CPU/GPU -> It's a phone, after what point does the CPU/GPU because excessively fast?
More battery -> I'd like to see how large the battery is and how efficient the new Exynos processor is. I have my doubts that it will be any better than what is currently available.
And do we even know what the iPhone 5 has to offer? And don't the One X and Ascend D1 Quad already compete?