I'm not sure any of the 970's are cherry picked.
Maybe the KFA2 Hall of Fame Edition, but I'm quite certain the G1's aren't cherry picked. There's usually a substantial price increase for cherry picked cards.
Now that you mentioned it, it seems this "G1 Gaming rocks cherry picked cores" -mantra seems to be doing the rounds in the web with very little to substantiate it; it's been made to seem like Gigabyte has actually confirmed it, but if they have, the original source seems really well hidden.
Any comments on the Asus Dark Edition linked above? Yay/nay? I'm not a huge fan of Asus's but the specs of that card do speak to me.
Cheers.