Just understand that:
-Apple created the tablet market with the iPad (they did not create the first tablet at all, but the first really mainstream one)
-Samsung without taking the risks Apple took just released its version of the iPad to get a piece of the cake Apple made.
Sure the Galaxy tab is different from the iPad, but from Apple's point of view, it must be quite annoying to see such a product happily competing with theirs. Apple took the risks and the R&D and Samsung just took advantage from that.
You can't really deny that.
But hey I'll just get buried under a few pages of Apple hate.