Winning guarantees three points, you can get a clean sheet and drop two points and you can also score goals and lose.
Outscore the opposition and you don't need to worry about clean sheets. As an added bonus, you'll probably play more entertaining football, and see an improvement in your attendances. Or you can risk grinding out 1-0 and see where that leads...
What happens in the untypical games? When the team that concedes first doesn't lose, they don't comeback to win, and it doesn't end in draw?