Rereading the OP, what does Byakuya > Mask really mean? All I know was that Byakuya stopped Mask from grabbing Renji with his shikai forming a bit of a wall/shield, with Mask being shocked at there being something in the way of him grabbing Renji. This fits with how unobservant Mask has shown to be. Byakuya also made a trap that Mask didn't notice which took him out of the battlefield, but did no damage, as only his clothing seemed scuffed and that could've been due to the fall. So overall, I'm not quite sure what Byakuya > Mask is meant to imply, unless it's for intelligence cause Mask isn't the smartest guy.
In addition, there's also this
"
Vollstandig Robert harms Shikai Shunsui. Robert says he lost his composure, so it’s unsure to me whether or not he would’ve been flustered enough to use Blut with Vollstandig, or just Vollstandig. So, I’ll account for that with possibly ratings.
Robert dings a distracted Shunsui.
Possibly Vollstandig Robert > Shikai Shunsui < at least Vollstandig Robert’s Blut = 5x Vollstandig Robert
Robert > distracted Shunsui"
Wasn't it Shunsui who lost his composure? Robert didn't say a single thing or act panicked whatsoever. And Shunsui losing his composure should have no influence on whether or not Robert used Blut. (Also, for clarification, does Blut Arterie affect the damage in general or just physical power? It would be weird if it was in general, but it also does seem like it's meant to be in general)