Yeah, there are 2 throw teching points in GG. One is when both players press throw at the same time, and the other is when one player throws, and the other presses throw within 2 frames. The first tech is the one where they don't do anything, and the second tech is where the first thrower does the first half of the animation and then the other player techs out after. For the second type of tech, I believe that the player who is throwing has a slight frame advantage after the other player techs out of the throw.