DPS wise, it doesnt make a diff on paper. even if a sith and shadow just sat there beating on each other with lightning/project. they would still kill each other. kudos to those who understand that activation time isnt a cast. once a gcd is initiated and both the client and the server agree on its legitimacy. the spell is activated and there is nothing beyond that point that will recall said action. the rock is on its way. it will even slam into a dead body but in practice, its a double edged sword, i may have more time to tack on a bit of burst right after that rock smacks my enemy in the face, wich in a span of.5 seconds may seem like two instant hits to the unprepared. but he has just as much time as i do to see it coming and pop a defensive, make sure he isnt juggling his hp to low, etc etc, assuming he isnt just standing around with a free gcd of his own, as people in pvp tend to do stuff