iPhone OS on Palm Pre

I am listening to Leo Laporte - The Tech Guy 571 and he is saying that the Pre and the iPhone 3Gs have the same exact chip set and processor. Wonder if you can put the software of one on the other, but wait the screens are different sizes, 3.1 vs. 3.5 and the Pre has a physical keyboard, guess there are differences and the OS would have to be modified to take the differences into account, but with all the Dell Mini 9's running OS X, I wonder if we will see Pri running iPhone OS on it? Maybe someday, would be a cool hack. The iPhone is more expensive, since the 2 year contract is more then Sprint, but you get a better network on ATT, however the Pre could run on Verizon, hmmm, more hacking. iPhone OS on Pre running on Verizon's network.