On the points: That is the reason, that we allow only one attack each within the first 8 hours of Battleday....to give everyone a chance to attack a previously untouched base for full points. Going in for second attacks allows a player to watch a replay and get a better idea what might work and what might not be so good and will know whats in the CC....all in all it squares out because (see my post above) a second attack for three stars of which 2 are new stars fetches 4 points on your own TH lvl and 3 points if there's only 1 new star.....three stars win wars and this competition (apart of meant to be for fun

) will crown the best attacker over the period of 4 wars.
As to defences: We do want ppl to try to make their defence work.
Because keeping the other team from three starring will tip the scales to your advantage. Hence the points for successfull defences and the minus points for stars lost (yielding only two stars will save you 1 point).
A successful defence is only one that looses no stars at all. A defence surrendering only 1 star but no new star neither counts towards the seccessful defence wins nor does it add to the minus points.
I have run a few different scoring systems through the data collected from last year and found the system pretty well balanced. I did however change the points for a sucessfull defence (these used to be 2 points per defencive win, are no only 1 point each).
It is a fair system, you'll have to trust me on this.
Have Fun
TS