That depends on the product, and on the specs. For instance, when I'm shopping for a new iPod, there are a few things I need to know about the one I'm buying: memory, battery life, processing speed is nice if I'm thinking about using it as a mobile web browser. There are also specs I don't care about, such as the ins-and-outs of the camera. It has a camera, and that's pretty cool I guess, but I don't care enough about it to let that affect my decision.
The Wii U is more powerful than the PS3, but less powerful than a couple of imaginary consoles that don't exist yet. I don't need to know the size, shape, and color of every part inside the Wii U. It's a game console; it's going to play all of the games sold in Wii U packaging. That much is clear. Its features, not specs, are pretty important. I don't care what's going on under the hood to make those features work. I didn't know the specs of the Sega Genesis when I was 5 (no, I didn't even know it had blast processing), I didn't know the specs of the N64 when I was 8, I didn't know the specs of the GameCube when I was 12, I didn't know the specs of the Wii when I was 16, and yet somehow I was able to enjoy playing games on those consoles.
