So this Giant Crab attacks the ship that the characters are on. It picks up a sailor but drops him overboard when the claw is disabled. It then picks up a PC with its other claw. I roll a 03, and so does the player on his parry. He's using a Naginata, which is two steps below the claw in weapon size. So it can parry, but only blocks half damage. However, the first attack with the claw is to pin the target, a second attack does damage. What happens? As the crab doesn't get a CM, does that mean that it can't pin the target? Or, does the successful attack (which can only pin) mean a successful pick-up?
*Edit* Damn I got it wrong, two sizes lower means nothing blocked. Does it still prevent the CM, though?