There is no such thing as a perfect analogy, but we use analogy everyday when discussing things and it's a very powerful teaching tool.
When a BJJ student is learning for the first time they can sometimes focus on tricks, "secret" moves, going for the finish when there is nothing to go for etc. If a student says "why can't I submit my opponent from my guard" you could take the approach of simply showing them a bunch of submissions from the guard. OR you can start by focusing on the first principle... before you attempt ANY positive action you first need to break his posture. If you constantly hammer home these basic principles the student is less likely to just "try" shit that pops into their head, it will be part of a methodical framework.
It's amazing how often people are willing to balk at common sense, or these "banal" general observations yet they violate these principles all the time. If someone defeats them they try to find the "trick" that will help them next time, when in fact all they have to do is remember something simple like "when you're on the bottom and they've got you mounted you need to create space and doing anything that prevents the creation of space is a bad thing".
You can teach him one good mount escape - OR you can teach him a mount escape whilst reminding them of that basic spatial principle.
Again - basic stuff - but it's basic stuff that wins. It's the basic stuff that ALWAYS wins.
There is nothing so uncommon as common sense apparently.
guard is not an inferior position. The analogy is to BJJ, not MMA or NHB. and in pure BJJ, the very best in the world pull guard on a very regular basis. Marcelo Garcia, the best pound for pound grappler in the world, almost exclusively pulls guard in some tournaments.
In general I like the chess to combat analogy. Brazilian jiu jitsu is like kinetic chess. The analogy isn't perfect, but it is pretty good, and you're being a hater if all you want to do is tear it down.