Meh, just because you tap someone doesn't mean you know nearly as much about jiu jitsu as them. It really doesn't mean much at all to be honest.
There is way more to getting belted than tapping higher ranked players out, but it definitely helps
Here is a for instance.
I have a guy in my school that has really picked the guard game up fast. So fast, that he was tapping blues in tournaments at 3 months. His clinch is good, his hips are good, and his timing is good. He has even put a beating on a few purples that have come through the school.
Now, with that being said, there are other white belts in the gym that can crush him. Why? Am I holding them all back to long? Does he deserve a blue belt for tapping these people regularly? No.
All the other white belts just pass and tap him. He is only dangerous from there. His game is far to narrow. Because of this, his understanding of jiu jitsu as a whole is much less than many of people he is tapping.
Not blue belt level jiu jitsu.
Maybe that's close to what he meant? Or he could just be crazy...