How exactly did it rip off GoT? Other than it being dark and the betrayal in the beginning of DA:O I don't see that many similarities. And even that is related in the sense that it's something that can happen in the GoT world.
Are people comparing The Night Watch with the Grey Wardens? Both are some obscure knight order but they as well don't have that much in common.
GOT vs Dragon Age:
-First, the dragons being an otherworldly threat to break in the "peace" of political scheming
-Magic is either really esoteric stuff or just swamp people
-Chasind/barb tribes from beyond the wall are pretty similar as well.
-As I said, noble houses scheming is very similar between both.
-A special group is tasked with defending the kingdoms from the otherwordly threat, and it's very much a thankless job
-There's a battle hardened general who is somewhat of a ruler but not really, and very interesting as a figure, and has a blonde daughter who is an absolute cunt
-Hot woman makes magic and is not what she seems
-Main religious belief is heavily inspired by christianism
-Shit sex scenes only seen as exciting and sensual by kissless virgins
Plenty of stuff among them. A lot of them heavily inspired by what GoT brought to the table. GoT was huge among Bioware and Bethesda, they've both put stuff influenced by GRRM in their games.