I am loving Windows 10. Better than 7 or 8.1.
Not sure what benchmarks they are using, but the one I use “GeekBench” shows that the MacBook 13” beats the Surface Book, and the MacBook Pro 15” smokes it by 2X. (And these are “older” (June 2012 release for the Pro) Apple products, due for a CPU update soon).
Surface Book: http://browser.primatelabs.com/geekbench3/search?dir=desc&q=surface+book&sort=multicore_score
MacBook 13”: http://browser.primatelabs.com/geekbench3/search?dir=desc&q=macbook+13%22&sort=multicore_score
MacBook Pro: http://browser.primatelabs.com/geekbench3/search?dir=desc&q=macbook+pro&sort=multicore_score
Perhaps they meant the “MacBook Air 13””? If so, the Surface Book barely beats it: http://browser.primatelabs.com/geekbench3/search?dir=desc&q=macbook+air&sort=multicore_score
And this is with a fresh install of Windows...in my experience after 2-3 years of use the Windows boxes will slow down substantially due to “creeping crud”.