Somewhat understandable. As I sometimes stumble over comparable situations I have made it a habit to never just make any graphs, I always make a script that makes the graphs. That makes it easy and quick to go back and just re-generate them if you later change your mind about some detail.
If you ever get around to updating the graphs, there's also a bug with where you're drawing the vertical dotted lines (for example I expect 4M to be at 2^22)
That's because it is in bytes, representing cache sizes. But I agree, a clarification is needed