Radeon Pro vs Quadro is a direct comparison, both are midrange workstation class, specifically Quadro RTX M4000 and Radeon Pro 5600M.The MacBook is impressive, except they forgot the number pad! Also, Radeon pro vs quadro is not a fair comparison...
M4000 is slightly faster being a newer GPU, but not meaningfully so.
LIkely what's going on is he's got a bunch of 'security' crap running in the background that his companies IT group requires that wrecks the computer.
I've got basically the same laptop at home and at work, and at home it works great, fans will only come on when its doing something like calculating toolpaths or whatever. At work its a piece of shit. Everything runs much slower and sometimes the fans will just randomly come on. If I look in the task manager there is a full page of just McAfee crap that is running. Also Outlook will frequently be maxing out a core just all the time.
He doesn't actually, they use ESET and it's pretty light. I also used to use it, but ditched AV altogether and just let Windows Defender do it's thing.
He does have outlook and yes, it's a horrible piece of shit on both ends (our exchange server was constant trouble at my old job).
It's just a terrible thermal design with firmware that tries to push the cpu too far. The Macbook has a much better thermal design and doesn't try to boost the cpu so hard for so long, and as a result is much faster overall because it doesn't throttle.