The BH are the "Captains of the Gotei 13" of the LPB family while Lobadon and Kirin are the "squad zero".
It's implied by Lefav that you need to be a top 200 to be BH.
Therefore, all BH are powerful, the difference is that there is Dokoko who only depends on his shinheuh and there is also Pudidy who guarantees himself in a cqc with an elite of the Ha family.
It was already made clear that above the BH only the 2 that command the family in the absence of Traumerei, the "regents" and it was also said that the top 3 were Pudidy, Perseus and WgW.
Now, this we're talking about forces in the light of day. If Pudidy was only a top 10 and he appears to be the strongest BH, it implies that he is only the 10th strongest in the family, even if we count Rei, Lobadon and Kirin, this account should hit top 5, not 10.
One of two, or they just ranked the top 10, without saying a strength order, excluding Kirin, Lobadon and Rei. Or in fact there are at least 6 more people who are stronger.
Here comes Koruro, he may be a BH, but given his VC status Hollam doesn't count him as one of them.
It's confusing because this information was said by different characters, in theory, Perseus knows a lot more about the family dynamics than Hollam.