Another thing that none of them seem to realize is that OMAP4 supports dual channel memory bus in Optimus 3D, while Evo 3D still has single channel memory. The Exynos processor in upcoming SGS2 will also have dual channel 1Gb, LPDDR2 memory too. This boosts not only graphic performance but also productivity scores. Not sure if snapdragon 8660 is capable of it or not.
Both Nvidia and TI is almost ready to put out Tegra3, OMAP5 which will again take quantum leaps in performance. I don't think Qualcomm can keep up with them. They came out with 3rd gen dual core snapdragon nearly 6 months later than tegra2.