Grapple SM question

[RyanW]

Originally Posted by jacobmuller

Oh, so you only count weapon size relative to the target if the attacker is SM+7 larger?

Honestly, I don't know the RAW, but the simplest way is to figure the SM of the striking surface of the attack (a slapping palm is about SM -7, a flyswatter is SM -6 or so) and always use the greater of the target and weapon size modifier.