See, when hardware evolves, so do the manufacturing processes. It's why when you see smaller or newer revisions of consoles, you'll notice they provide the same experience as the older model, but still maintain the same efficiency.
For instance, the power consumption and size of the components of the PS3 from the Phat > Slim > Super Slim have GREATLY reduced the power consumption and size of the components needed to run the PS3 since the original modeal.
In the long run, as these companies figure out how to get more out of less in their systems, they end up saving money by figuring out ways to increase efficiency by producing cheaper parts without sacrificing the integrity of their system, to ensure parity across all their models.
Essentially, what that last comment about is that they're amazed at the design efficiency that Nintendo has pulled off to make something with that kind of fidelity that has such low power-consumption with a greatly reduced amount of parts (saving your bills a few bucks a month, and reducing the heat a system produces). It is probably extremely efficient for them to produce as well, and will help them on the road to quick profitability as they further reduce everything in size down the line.
