The two seem to serve different purposes. I experienced some frustration with 80,000 Hours because I really just wanted to see numerical salary distributions but got lots of words and blog posts instead. I could have set up an advising session, but it felt 1) Cumbersome because I'd need to set up an appt, follow up, etc. and 2) Awkward because I wouldn't trust their judgments to a great extant; they hadn't provided sufficient evidence of their expertise for me to trust their opinions, but I would have trusted them to accurately report data that they had compiled.
Edited to remove word salad.
Some quick background, I am putting together a non-profit whose goal is to provide objective, rational career guidance to high school/college students, with the aim to solve what I see as a pretty big problem in the American educational system: our current career guidance is more focused on how to get a job on your chosen field, rather than what field should you choose in the first place?
Mid-ranged goals involve setting up programs where students can "shadow" people who work in a field they are interested in so that they can see what those types of jobs actually entail. Short-term, the goal is to put together some informational resources that students can use to help guide their decision a little more rationally.
One of these information resources is a database that uses data pulled from the Bureau of Labor and Statistics, to tell you