iPad Air 2 vs Nexus 9

Apple and Google recently released their flagship tablets. Apple released the iPad Air 2 and Google released the Nexus 9 tablet. The iPad Air 2 has a 9.7 inch display (2048-by-1536-pixel resolution), an A8X processor (64-bit), and a 8 megapixel camera (1080p) with camera stabilization. The Nexus 9 has a 8.9 display, a 64-bit NVIDIA Tegra K1 processor and a 8 megapixel rear camera. I currently own the Nexus 7 tablet and both tablets look like a decent upgrade. The iPad Air 2 also has Touch Id built in. It is great that they are adding Touch Id to their tablets. What tablet do you think is better?

Source: Apple, Google