As far as graphics go, it is my understanding that the Intel HD 530 has almost identical performance to the Iris Graphics 6100. From the benchmark you quoted, one would assume the Iris Graphics 6100 was almost twice as fast as the HD 530, which it is not.
Intel Iris Graphics 6100 Benchmarks:
3DMark Ice Storm GPU: 89,341
3DMark Cloud Gate GPU: 7,798
3DMark11 P GPU: 1,694.5
3DM Vant. P GPU: 5,717
3DMark06: 8,764
Intel HD 530 Benchmarks:
3DMark Ice Storm GPU: 88,461
3DMark Cloud Gate GPU: 8,598
3DMark11 P GPU: 1,453.5
3DM Vant. P GPU: 5,586.5
3DMark06: 11,360
For Skylake, even the lowly Intel HD 520 found in most budget laptops can pretty closely keep up with the Iris 6100
These figures came from http://www.notebookcheck.net/Mobile-Graphics-Cards-Benchmark-List.844.0.html
That's what I thought, but I didn't bother to look into it further. Intel's bewildering naming scheme doesn't help.