The only stomatopod that I know of that has had it s strike "measured" is Hemisquilla ensigera. In fact, Burrows didn't directly measure the strike, but rather used an indirect calculation based on the force needed to move the propodus at the appropriate speed. Given that the speed was estimated in the air and not underwater, it was probably off. We are currently measuring directly the striking force of Odontodactylus scyllarus and Gonodactylus chiragra. It looks like a large (18 cm male O. s.) will surpase Burrows' estimates.
As for size, I have caught H. e. up to 11 inches that puts them considerably larger than 15 cm.
Roy