Depends.

Jousting is really not much different.

If you get a good combo on the factions champs, they are easy. If you don't, they can be very challenging.

Paletress can be a pita, but it's really about execution, nothing more.

Eadric is a complete pushover.

The Black Knight is where you'll really feel it, though. I had normal on cruise control, and wiped at least 10 times figuring this fight out. I have this place on 15min farm now, and he can still kill me if I forget to drop the right totems, or am not paying attention. The second and third phases are definitely no joke.

I would recommend staying in normal until you can do it without dying consistently. Maybe go try a heroic out just to see, never hurt, but I'm thinking you'll want that experience before you go at it in earnest.