Fans/actual core gamers.
Why would they be casual when they spend 1-x hours a day on a game?
Of course, they are all casual and boring, idiots, time wasters or having a low IQ because they are not like "you" which makes them worse by definition. ;)
Where does casual mean "worse"? And I know tons of people who use to pour hours upon hours into Candy Crush, Sims etc, so I've personally never looked at it context of how much time you spend on a game, but thats just me. These are just loose semantics, I far as I'm aware there is no true definition.