That makes sense. I was surrpised to get the full 5 Mb/s up but 10% of what I expect down.
VM Business were able to force the Superhub onto a different upstream, but that is as congested it seems as the previous one.
Here is my Thinkbroadband graph - looks like classic congestion :-
The business superhub runs different firmware and is on 5.5.2R04T15-BU