Snapdragon 600 Geekbench and Antutu results are from: http://www.androidauthority.com/galaxy-s4-benchmark-comparison-173208/
Tegra 4 Geekbench result is from http://www.pcmag.com/article2/0,2817,2415809,00.asp
Other Geekbench results are from: http://browser.primatelabs.com/processor-benchmarks
Passmark, Android Passmark, is from: http://www.passmark.com/
Tegra 3 and 4 Antutu results are from: http://www.engadget.com/2013/02/24/nvidia-tegra-4-benchmarked/
Clover Trail + Antutu result is from: http://www.phonearena.com/news/Intel-Atom-powered-Lenovo-IdeaPhone-K900-benchmarks-are-astronomical_id38597
Exynos 5 Octa Antutu result is from: http://www.androidauthority.com/galaxy-s4-benchmark-exynos-5-octa-version-gt-i9500-available-179752/
Want to see how well an ARM laptop works? demo video.
Notes:Especially when dealing with different architectures, take benchmarks with a grain of salt.
I include the Atom D525 here as it was commonly used in netbooks, it is clearly faster than Clover Trail.
The Tegra 3 is used in the Microsoft Surface RT and the ASUS Nexus 7.
The Exynos 5250 is used in the Samsung Chromebook and the Nexus 10 tablet.
The Apple A5, A6 and A6X are in the iPad 2, iPhone 5, and iPad 4th gen, respectively.
The i5-3317U is used in the Microsoft Surface Pro.