Early on at the 2011 Mobile World Congress, Samsung and NVIDIA made an announcement that the Galaxy Tab 10.1 will be made with NVIDIA's Tegra 2 SoC (I9103). They also announced that they would be working on a new superphone based on Tegra 2. But at Samsung's press conference, we saw the Galaxy Tab 10.1 and the Galaxy S II, using Samsung's Exynos SoC (GT-I9100). There was no mention of NVIDIA or Tegra 2. Why would Samsung use Tegra 2 when it already has a Exynos-based smartphone?