It's always good to also look into some of the context for why the Geekbench scores are so much better so that you understand the actual real life performance impact. Two basic things: Kaby Lake chips can turbo higher and they can also turbo faster.
For bursty workloads, they will feel *much* snappier, but longer term tasks will likely be throttled down over the duration of their execution. For the kinds of workloads expected on a machine like this, it should have a really significant tangible improvement.
Generally I'd say this is a spectacular upgrade with the SSD speed boost, power efficiency, and burstable speed.