Everything has been screencapped.
I know nothing of Mr. Russell's other ranks or skills. I think it's somewhat odd that he doesn't list his Judo BB lineage, however I frankly am unconcerned about anything other than his BJJ lineage.
So yes, I am only questioning his BJJ lineage.
Also, the response from Mr. Sanzo that states he questioned Mr. Russell's lineage has already been posted.