Everyone has different play styles. I don't think DAI is difficult to grasp at all, and in fact the mechanics seem pretty straightforward once you consider the system on its own. But a lot of that requires a very different mindsent from how most would approach character building in an RPG, and I think that sets us all apart.
I don't outline characters and I don't enjoy learning a ruleset in the abstract. Learning is very experiential for me, very much based in trial and error. In that regard I find POE to be a bit opaque - like all IE games it reallt wants me to study for it before I play it, which is a legitimate design choice.
For me there's no difference in how I approach the games or how easy I've found it to break the POE system. The ruleset is more complex in POE in a way that's far more familiar to IE veterans, which I think is where a lot of the appeal comes from. It's a bit if a Frankenstein ruleset too, but unlike DAO it isn't trying to me an MMO mechanic translated to an SP game (using mana pools and cooldowns, as well as more openly mathematical DPS or burst damage focuses).
For example, murdering that bear in the first cave solo with most classes. There's always a built for it. It just requires getting a sense for the game.
Well, my point was mostly that DAI's leveling system is not interesting. It's extremely indifferent, and I don't even have to bother with it, so I don't. There's no gameplay value in it. Unlike in PoE.
As for PoE, I have only played it enough to be able to say that I think I will enjoy it tremendously. But also that I see no way in h*** that I will enjoy it more than DAI. No way. Not possible. DAI is overall the better game.
I also learn game experimentally, or - as I go along, or need.
What I'd like to see is more intuitive systems. Like original PnP gameplay, for all it's simplifications, or Morrowind.
This is one of the things I really resented in DA2, and unfortunately, to some extent, in DAI too. The combat mechanics are so abstractly symbolized, unnatural and videogamey. It's like there's been someone believing in the typical videogame formula, hanging over the developers shoulders and giving advice.
A thought I had, as I began playing PoE, is that the role-playing, actually - at least not yet, where I am - is not at all better than in DAI.
The role-playing has it's upsides and downsides, in both games. The problem with PoE is that I don't experience much freedom. At least not yet.