I just noticed that ingame my duel count is shown as 4, while the website shows my duel count as 3. I think 4 is the correct number as I remember having a bus duel once upon a time and it wasn't with Starwind or Kepler.

Deleted accounts get removed from the duel page but not from your charinfo.

Or used to ... looks lke there are soem deleted accounts in there now

I thought that might be it. Should still be fixed one way or another.