What I found out that airline turboprops, regardless of types, generally are a challenge to learn and to fly. They have basically the same system layout as a "big jet", so mostly 2 engines, three hydraulic/electrical system and today's EFIS glass cockpit. Some even have CAT III head-up guidance, aso.
On the other hand there is still that Bl00dy prop thing, which, depending on the layout, gives you more or less headaches. While on a jet you just see fading away the thrust during failure, you have to be really quick on handling the prop, otherwise you will spirale your way towards the ground.
Then there is also the bare technique and comfort, which is not at the same level as the big brothers: reliability, maintenance, quality of simulator, operational support. I see no field where turboprop is easier to handle.
So if you say that the ATR is pretty difficult to learn/handle I believe you, telling you that this is about the same as every other turboprop in this class.
Dani