The difference here, though, is that this was built for gamers, and the AG2712 is also kinda thick'round back, which defeats the purpose of building a desktop with mobile bits in the first place.
Another important factor in the latest round of thin vs. thick (lots more storage and processing capability) clients is that the current generation of mobile devices offer light weight attractive packaging, fast access to content (no wait for boot and application changes) and reasonable battery life (although this is an area of much needed development).