It is simple, the alliance ranking was not updated in real time, got stuck somehow, so what u see in the hall of fame is the alliance ranking around 10 minutes before the end, and the updated, up to last second, player ranking; in the last minutes I decided to increase the size of my real ships instead of powerships, that's why lamma and the others seemed to be close to my power in the end
Just in case u were wondering how much I had towards the end:
Type Details Date/Time
Credits
Action Credits Remaining
Stash Depozit -300.000.000.000.000.000 18.051.811.896.177.025 2006-03-13 04:49:33