The entire market is just a sham in my opinion anyway. Both companies know EXACTLY what they are doing and limit their "technology" to continue forcing new purchases over the spectrum of years as they pass.
I.e. I wouldn't be surprised if technology for 4k gaming has been out for several years and they juw now releasing it with the 2080TI's etc.
I've had great results with both companies overall. I have a machine that holds an newer Intel GPU and I have an older machine that holds a AMD GPU from early 2012. Both machines are still great though and have their own pros and disadvantages.
The intel hardware like most will tell you tends to run hotter then the AMD, this means better cooling is required, but also in the long run the processing of said games is likely slightly better even though how better in 2019 could be argued with Ryzen out.
the AMD line has always been great. I grew up with the Athlon brand, and eventually FX series CPU's. I still own a couple of Radeon GPU's to the boot and they work beautifully. I can always expect decent heat temperatures even just on air cooling which can be reassuring to me. This also has the given bonus that I don't need such an intensive power supply to run the games I want.
I guess it just boils down to if you are a heavy gamer(aka like to play the newest games out ) , if you are a graphic freak who wants the highest resolution with most ultra settings, or if you just like a good storyline and don't care about the rest.
Personally I can get along with just my AMD machine as I don't mind graphics a whole lot as long as the combat system and the storyline is pretty decent. (i.e. I HATE Mass Effect 1 ) but I LOVE Mass Effect 2 and going forward. )