From some of the videos ive seen, the 5 did fine side by side with the 5s and in some cases beating or being dead even.
Im sure that will change over the course of the 5s lifetime as apps get optimized to the new architecture of the processor, but to say its huge without any real evidence is misleading.
Im sure that will change over the course of the 5s lifetime as apps get optimized to the new architecture of the processor, but to say its huge without any real evidence is misleading.