I think you're expecting it to be a general purpose mobile CPU comparison, when it's not. It's a very specific look at the next generation of ARM processors. Similar to a look at the next generation of Intel processors or the next generation of AMD processors, it makes sense to compare and contrast specifically it to what came before in the same line. That said, they do include A10 and A11 processors in the benchmarks, so you can see how it is projected to perform in comparison with current processor lines.

Additionally, there's far more to compare that raw performance, especially when looking at these types of CPUs. Actual size (others here have mentioned Apple's processors are quite large due to cache), power draw at idle/peak, etc are very important for mobile CPUs.

In the end, it's not a buying guide, it's an info-dump about a new product.