Also N2, even N1, is generally not remotely fluent. Plenty of Chinese can pass N1 and still failed to have a conversation.
Further, it's easy to pass N2 and/or N1 and still not be able to read most novels or listen to most movies when they get to things like legal proceedings, military strategy, science. All things that people can easily do when actually fluent
When it comes to the practical results it doesn't matter. Japan is a society that values rubber stamps over actual competency/performance. If you can present an N1 certificate to an employer you're more likely to be hired than someone who's fluent without it (assuming they aren't Japanese)
Source: live and work in Japan