I've got to say that the standard points for wins encourages many things. Firstly, when you are clearly winning the game, you can stop pressing to totally destroy the other guys army. It don't matter if you win by 50 pts or 500 pts a win is a win. Secondly, you need to bring an army that can handle scenarios. Some of them don't even count up victory points but award a clear victory for winning the objective. Lastly, you can take nicer armies, like TVI's or the army I took to Baltimore last year and have a shot at a win. It also awards having a good looking army and being a nice person.