Bah, don't listen to this, DA:O is only "good" in comparison to DA2 and then mostly because it's a playstyle they (the people saying that) prefer.
DA:O is not that great a game, it can be fun, but it is not good. It boils down to fetch quests and rather unimportant dialog decisions. You can leave your party on auto-pilot 3/4 of the time and they'll easily dispatch whatever attacks you.
If you just want to plow through something mindless DA2 is probably the game for that. I guess if you want to read 100s of pages of lore maybe try DA:O, that's probably the best thing it has going for it and even then a good novel would be better.
Neither are good games, sometimes they can be fun though.
People complain a lot about the combat in DA2 and I get it, it's not very good, the part they often leave out is how totally ass the combat is in DA:O. I've now played it on console and PC and they both have horrible combat, I mean really, really bad. I literally soloed a certain dragon at the top of a certain peak, my party was too fucking stupid to stay alive without insane micro so I simply let them get knocked out. The dumb dragon just breathed fire, there's several viable ways to have really high fire resist by then, but even if you don't a high Con score would probably do just as well, I just sat there and staffed him to death while drinking endless pots and HoTing myself for stuns. Yes, the big, bad ass dragon was too lame to even pose a challenge to a single character.
This, in essence, is about how badly you need your party most of the time and about how badly they need you. You could probably miss the fact there's a tactics screen at all and get through most or all of it.