I don't need to quote [H] to show R290X was really close to the 980. Actually if you read their own R290X vs 980 articles,
it shows a gap of 25-50% due to GW titles. If you read elsewhere, like Guru3d, TPU etc, it's ~10%.
The only massive titles on their test: Witcher 3 and BF4.
The rest are actually obscure, as in few people even play them. Don't believe me? Just look for yourself!
http://steamcharts.com/top
So they can pick any other titles but nope, let's pile on GameWorks. They would include Batman: AK as well but it was canned.
ps. If any FPS needs to be included, its ARMA 3. Still very popular, still crushes GPUs.