I find the rivalry very petty even more so than the console ones, because owning a game is not the same as owning a console. I chuckle sometimes when I see a Witcher fan saying "W3 is going to take a dump on DA:I", because I don't think Witcher has much on DA other than visuals. I've seen the demo and honestly I was not impressed. They still use that DA:O style list conversation method while DA's conversation system has significantly evolved into something far deeper. I also tend to prefer DA:I's more fantastical setting than Witcher's more grounded one. I also felt that the DA:I combat gives off the more tense feeling because you have companions around you. In the W3 demo, while the effects during combat looked nice, it just didn't look all that impressive, just improved.
They keep comparing W2 to DA 2, but they can compare DA:O to W2 and DA:O still comes out on top(imo). Witcher is a great series, W2 being really good(I played it), but I don't think that series is in anyway "better" than DA like so many Witcher fans seem to believe
Having said that, I have seen people here rip on Witcher too either simply because it has a heterosexual male protagonist or that the story is boring, or because some feel the game is sexist. Both sides are at fault, Witcher fans being the loudest. Then again, this kind of behavior is not limited to Witcher and Dragon Age. People should see how much flak Lords of the Fallen is getting from the so-called "die hard Souls fans".
In any case, I just want to remind people irritated by the Witcher fans who keep insulting the DA franchise, that W3 is the last of the series. DA still has at least a couple more games left, with who knows how many more books and comics we get to read between them. So, let them scream as much as they want, nobody will care once W3 is released and done with.