This is as true statement, as naive one. Testing both 1080 and 750Ti with same Ultra setting will give You objective performance comparison between the cards, but will not tell the relatively poor, Indian, Chinese or East European 750Ti owner if He should invest in a new game. Such test will look for him like a one performed by a sellout Intel/nVidia wh*re of a journalist. And then He will go to YT to look for "GTA5 on a q6600 and 750Ti". And then it will turn out this whole article might be a scam sponsored by Intel.
If you checked on YouTube you would just find a heap of videos like this...