Do we know how Apple's Cyclone shows roughly 4x better IPC against Krait at Sunspider benchmark? Are the extra registers and bigger L1 enough to explain that?
As for why, Cyclone's core are bigger, wider compared to Krait/Cortex, and are Out Of Order. (This is a nice article on that: http://www.extremetech.com/computing/179473-apples-a7-cyclon...)