I definitely wouldn't say it struggles...
To my defense I said Full settings and those benchmarks aren't at full settings. That being said clearly the 970 performs well. I guess I have just heard isolated issues with people having serious issues with vram on gta v with the 970, especially once you actually run it at full spec with advance graphics turned up. Essentially the 970 runs great until you get around 3.5 gb of vram.
it has 4gbs just .5gbs of it are slow