It seems this run is a causal any% but not a normal any% http://www.speedrun.com/run/nz1g729z Maybe the mod can update the leader board to separate all difficulty levels?

I made a thread addressing the problem with categories for difficulties. It applies to this game too: /The_Site/thread/7z7du

Just to confirm is this category on casual or normal difficulty

The categories are normal or brutal difficulty. I hadn't seen that that run and I have no idea why it was accepted in the first place. I've rejected it now.