One of the things that Apple has almost always been able to faithfully claim is that their single-core performance for their A series processors tends to be quite a bit faster than anything Android has to offer. This is one of the reasons why Apple hasn't rushed toward multi-core processors. Of course, the "king of the hill" rarely stays in that position forever, and that is what we can witness now.
The new HTC-made Nexus 9 tablet has bested the single-core performance of the Apple A8 processor by quite a large margin in the Geekbench synthetic benchmarks. As you can see from the pic above, the NVIDIA Tegra K1 processor with 192 CUDA core Kepler GPU scores a whopping 1903 in single-core numbers on Geekbench. The next closest competitor is the A8 processor in the Apple iPhone 6 with a score of 1630.
As an interesting side-note, the Samsung Galaxy Note 4 actually bests all other chips in multi-core performance (3259.67), although it only pulls ahead of the Nexus 9 by a small margin (3166). This bodes well for those who want to play games on the Nexus 9, because mobile games typically aren't as optimized for multi-core processors as well as they could be. Combine that with the amazing Kepler GPU tech, and we have the makings of a mobile gaming tablet that could rival PCs and/or consoles from last generation.
Source: PhoneArena