It's longer than a laptop, but honestly, I have my laptop set up to hibernate if I have it closed for more than ten minutes or so, and it takes several seconds to get that dehibernated, even off NVMe, and some of that is happening in parallel. My last laptop was a lot slower, took something north of ten seconds to get dehibernated. He's gotta drop a keyboard on his desk, unzip his HMD case, and plug each in (if he's not using a wireless keyboard or the wireless accessory for that HMD, neither of which I would personally use). Some of that at least can be parallelized. And that HMD has integrated headphones, IIRC

I carry headphones with me for my laptop, so he doesn't need to do that bit.

EDIT: Oh, and his trackball/trackpad/mouse or whatever. I carry a trackball with my laptop, but don't usually use it.