Google Nexus has a weight of 14.99 ounces and a reach of 8.98 x 6.05 x 0.31 inches which is respectable enough. The hardware of Nexus 9 has been made by HTC company but the Android software is the sole property of Google. The latest version of Android, the Lollipop has not been rolled out en masse yet but smartphone Nexus 6 and tablet Nexus 9 both come with the latest version. The resolution offered by Nexus 9 is 1536 x 2048 pixels with a screen size of almost 9 inches. The processor is 2GB, quad-core Nvidia.
Apple's iPad Air 2 is heavier than Nexus 9, not by a lot though and weighs 15.42ounces with a reach of 9.45 x 6.67 x 0.24 inches. Neither the hardware nor the software has been outsourced and the iPad Air 2 is manufactured by Apple. It runs on iOS 8.1 with a screen size of 9.7 inches and a resolution of 1536 x 2048 pixels. The RAM is the same at 2GB with a processor that demonstrated 1.5 GHz compared to Nexus 9 which was faster at 2.5 GHz.
The display offered by both devices is excellent. Although Nexus 9 has 17 pixels more, that is a difference that is not visible to the naked eye, no matter how close one gets to the screen. The displays are dazzlingly bright and reading in sunlight is easier because of this. The bigger screen of the iPad Air 2 may allow users to watch a movie but the iPad loses some points for transferability.
When it comes to design, iPad Air 2 is a winner because it has an attenuated structure, the sleekness is esthetically pleasing making it look more high-end than the Nexus 9. Its back is made of aluminium which gives it a more sturdy feel. Nexus 9 on the other hand may not be as lustrous however, it is much comfortable to hold. Although both weigh almost the same, Nexus 9 feel lighter. It has a much stabler grip making it less vulnerable to a fatal fall. The touch ID included in iPad Air 2 is an unnecessary addition that is made up by Nexus 9 through adding speakers at the front.
Coming on to the camera, both the tablets have an 8MP camera which is a mere formality as most people prefer to take pictures through their phones or DSLRs. The speakers are nice as well with both blaring enough sound to be overheard in another room but iPad Air 2 is a bit louder.
The latest Android update, Lollipop is a great step forward. Everything is flowy, there is very little lag, animations are great and there is a lot of clarity. Lockscreen has been remade and notification can be dealt with easily without additional navigations. In contrast, iOS 8.1 isn't very much different from the previous versions of 8 and 7. Though iOS 8.1 is characteristically very clean, extremely easy to use and is completely lag-free, still Android Lollipop seems to be giving it a very tough competition.
In short, the iPad Air 2 and Nexus 9 both do a superb job though this round has clearly been won by the latter.