Google undoubtedly upset the tablet market almost overnight with the Nexus 10: that record-setting 2,560 x 1,600 resolution, Exynos 5 Dual, Android 4.2 and all-important $399 starting price just tilted price-performance balance in a different direction than we'd seen even a week ago. But how does it stack up against its competition? We've included full details of the devices in a chart after the break; initial appearances suggest that pure performance hounds may like the Nexus