"The performance of a single Cortex-A72 core is rather uninspiring compared to the Snapdragon 820's Kryo within the OnePlus 3 and the Galaxy S7."
A72 is actually more powerful than Kryo. Geekbench 3 test were not as accurate and did not conform to SPEC. Re do the test with new Geekbench 4, it confirmed at the same process and clock speed Kryo has the same IPC as A57. Both A72 and Samsung M1 cores are faster than Kryo.