Well, I also think that Apple has fallen behind. But not because lack of touchscreen and 2in1 devices. I hate that my keyboard is stuck, I hate adapters and dongles, and I really hate 'make it thinner' culture that prevails in Apple.
I have tried Surface Book, and I simply didn't find it suiting me at all. And no, windows has got nothing to do with it, since I use windows 10 all the time.
But ok, I really don't like tablets at all. It doesn't matter if they are iOS, Android or Windows. In my line of work, I found no use for them. Except media consumption. But even there I find macbook 12 to be a better option.
Maybe if I were a graphic artists or something similar, then I wound find SB to be excellent or better then MBP. But I don't deal with photos or drawing