Can a Dev tell us how scores are worked out

Just cant seem to get over 600 score lol. I played one game, on pre normal, large map, i ended up winning with 550 pop, i had 1000's of kills, i was FAR more advanced, and so had a great ratio of kills to losses, i was mile ahead in techs, i wiped out all the races and got a military victory.

When i won i got a score of 500ish hehe..what gives? this game took 14 hours over a period of days, how are people getting 1000+ scores using the same settings, and winning the same way as me?

Thanks!

~SDC~