Not Quite. The momentumn acts at the center of mass. Therefore, say the rigs were identical, the heavier hull would maintain the boatspeed longer with little pitching effect (its weight acts at essentialy the same elevation as the resistance (wave form drag). This then gives the crew a longer time to react in.(To drive off, let the gust pass, or get both hulls under them, sheet in the jib completely to choke the main...) Also, the light boat, in decelerating, rapidly feels the actual wind (off the wind, the apparent wind shifts aft, to becoming true wind) as the boat slows.At this point the slower the boat, the bigger the wind/boat speed difference. In wild conditions, this wind even on a stalled out rig, will drive you stern over stem. And you have nowhere to go. Just like boat speed needs to be maintained for a smooth jibe. (From a fellow SA by the way)