The 3 points for a win and 1 point for a draw system is a bit strange IMO. A draw can be a very hard-worked for, good and proud result in chess, whereas f.i. in football, where they use the 3 point/1 point system, a draw is usually considered to be less spectacular. I played in a couple of tournaments on this site where I would have proceeded to the next round if the system would have been 1, 1/2, 0 points. With the 3/1/0 system, if you play too many draws, you've practically lost the tournament, which means that yes, you would have fewer draws.