SuperPI isn't supposed to be a benchmark as much as it is a measure of the mathematical prowess of the processor. Really, it doesn't have any actual bearing on much of anything.
The time where 64-bit processors become a dominant force is not going to be for several years, and saying otherwise is arguing with past technological trends. Considering that Vista--the only Windows operating for several years--is coming in both 32-bit and 64-bit flavors, I'd say that the wiser of us have taken a clue: 32-bit is going nowhere soon. Even in 3-4 years, I'd be surprised if 64-bit processors made up more than 25% of the computer market; people don't run out and buy new computers at the hint of new technology. Just thinking of all the people I know that use computers that are more than three or four years old gives me a pretty clear idea at where we'll be in a few years... so congratulations, you can be one of the select few running a 64-bit processor and operating system.
Anyways, I don't see how you can honestly say that GamePC is not a reliable source, but then turn around and link an amateur review on NBR. Even further, many notebook manufacturers underclock their cards, so you're going to be dealing with a whole variety of factors--even driver versions effect results. In fact, unless you use the desktop motherboards for the mobile chips, you're not going to get similar benchmarks for your parts. As it stands now, the Pentium-M has a clear lead over the Turion in gaming, which is understandable--even desktop PCs featuring the 64-bit processor versus a similarly clocked 32-bit processor have shown equal or lesser performance in games.
The fact is, 64-bit processors are like hybrids. Sure, you'll see one here and there, but they still make up an extremely small percentage of the auto world. And like the Turion (and other 64-bit processors), they'll eventually hit it into the mainstream, but it won't be in the next year or two.
EDIT: Just a word of advice, these "official" benchmarks you're looking for... are you expecting them from the chip makers? Intel and AMD both severely slant their results... its part of the whole "marketing" thing, you know?