“With up to twice the CPU and graphics performance, almost everything you do on iPhone 5s is faster and better than ever, from launching apps and editing photos to playing graphic-intensive games—all while delivering great battery life.”
Compares CPU and GPU (Metal) with the A6 in the iPhone 5. No baseline named, read as the previous generation.
iPhone 5s announcement, September 2013, Apple Newsroom, iPhone 5s announcement, September 2013
Falls short on multi-core
GPU (Metal): not measurable with Geekbench. The iPhone 5 (A6) has no Metal, so the baseline has no Geekbench 6 GPU score.