I play on a Blue Label weekly. I have a GC4 with Superspeeds at my place, cut to "diamondized" specs. Non-issue going between the two. They play remarkably similar. If anything Artemis cushions lets you twist the ball a little bit more. You can get that action on Superspeed cushions, just have to hit it better, lol.
I prefer the Superspeeds.
I prefer the Superspeeds.