Battery lifeThere is little to choose between in terms of performance, but what about battery life?
The larger chassis on the iPad has allowed Apple to squeeze in a bigger battery pack. It's 70 per cent larger than the one included in the iPad 2, with its capacity leaping from 6,944mAh to 11,666mAh. In our tablet battery test, the iPad 3 managed 12hrs 32mins of usage. This wasn't as good as the iPad 2's 16hr lifespan, but still the best on the market.
The iPad is unmatched when it comes to battery life, and is able to break the 10-hour mark comfortably
Google has used a 4,325mAh power pack in the Nexus and despite being well over half the size, it provides 8hrs 48mins of uptime, which is still a significant amount.
Winner: iPad
The Apple device has a screen which is around three inches larger than the Nexus, but still manages to offer better battery life. Its 12hr lifespan is unmatched, but the almost nine hours of the Nexus is a respectable result.
Screen
Its name may be little more than a marketing gimmick, but Apple's Retina Display has upped the standard when it comes to screens. The 9.7in display has a resolution of 1,536 x 2,048, which is bigger than most laptops on the market so it has no problem eclipsing rival tablets. With a pixel density of 246ppi, you're looking at crystal-clear quality as individuals pixels are rendered invisible to the naked eye.
The iPad (left) is noticeable brighter when it comes to tasks such as reading and web browsing
Colour accuracy and brightness on the iPad are both excellent: we measured the latest iPad's brightness at 426cd/m2 and recorded a contrast ratio of 906:1. Text is sharper than a brand new set of knives, and properly optimised images are just as clear.
No other tablet can match this, and with the Nexus being a budget device we didn't expect it too either. However, the display on the Nexus 7 shouldn't be scoffed at. The combination of a 7in diagonal and a 1,280 x 800 native resolution provides a pixel density of 216ppi, so text and images are reasonably sharp. Brightness is noticeably less than the iPad at 330cd/m2, and contrast is higher at 1,100:1 meaning colours lack punch when compared to Apple's device.
Winner: iPad
Apple's tablet is more expensive than its rivals, and the firm has spent much of the production budget on the screen. Its massive resolution and high pixel density make for the sharpest panel on any tablet, and its colour accuracy and vivacity are top-notch. The Nexus has excellent quality of its own, but it just can't compete with Apple.
