The moment Google announced Android 3.0 reference design based on nVidia Tegra 2 platform, they already won. Now everyone will simply adopt the platform because Google has already done most of low level software work and testing.
BTW IMO Samsung 10" device is a big mistake. Most people bought the first gen Galaxy Tab because its a 7" device instead of 10". If one had to choose b/w two 10" devices, definitely most people are going to choose iPad.