I mean, they put GPT-4 ("SOTA LLMs") for a subset of tasks at Level 2N, a spell checker at Level 3N, and chess and Go solvers at Levels 4N and 5N. It feels to me that any useful grading scheme would give the opposite ordering. Sure, the current classification meets their definitions - "outperforms X% humans" - but at least with chess and Go, the rating is dominated entirely by the fact that very few people play these games at non-joke level, and the activity itself is super specific, and super narrowly scoped, mathematically speaking. Feels almost like calling CPUs Level 5N at "adding numbers together", since they clearly outperform 100% of humans at that. Or, much less jokingly, one could convincingly argue a PID controller is Level 5 Narrow, because not only it's going to be outperforming 100% of humans at its task, it's also learning and adapting (within its operational envelope).