Which one of these things is not like the other - which one of them does not belong? Any lay-person looking at the three tablets in this odd stack up might say the Galaxy Tab 10.1 on account of its white color and custom-etched backing, but look at that little weirdo. The LG G-Slate is one of the latest dual-core tablets to be released in the USA and it's ever-so-slightly smaller than the other two here in this stack-up. It's also got a 3D camera. That's pretty weird. And what about that Motorola XOOM? It's what, several months old. Shouldn't it be extinct by now? Hardly. Behold this week's ultimate battle to the death, Google I/O 2011 style.