Of course, Medfield is a faster browsing chip than Qualcomm's Krait and lasts longer doing it. It can beat both A6 and A15 in some benchmarks but also loses to them in others so it's in the high performance mix as well as being in the long endurance mix. Intel have produced a competitive phone chip at 32nm contrary to the myth x86 couldn't do it. It's a start of what no doubt will be a continuous flow of better future phone chips to come. Everybody will not suddenly switch to Intel phone chips but more will in time and hey the starting point is 0% so the only way is up ;-).
'In both cases, we assume we've normalized for battery life. Without doing that, comparisons are meaningless.'
You don't normalize performance which is measured in seconds over battery life which is measured over hours. You look at both and see what combination suits you best. The RAZRi beats the iPhone4S in one of those battery tests anyway. iPhones success is as much to do with the design and Apple ecosystem as it is due to the chips themselves. Medfield is a new chip in not many phones outside of the brand leaders, it will take time to acquire brand recognition and sales.