@Danp
The backup jobs are Delta Backups. And other than the Health Checks-theory, I don't really have a theory of why the same job would report 28GB transfered in XO5, but 172GB in XO6.
The comment about the side panel, is more an emphasis that it is very difficult to read and extract the relevant information from. Whereas in XO5 that information was presented far easier. Both from a readability standpoint, but also accessibility. Where I have a very hard time with being able to focus on elements in XO6... But that is another topic for another day. I'm eagerly hoping for it to mature more. And it is slowly getting better.