@skilledCougar, whether you survive with 1 or 17; another player soloing is deemed to go on to conquer all of europe - thus you get nothing.
In a draw, no matter how many centers you have; everyone is included in the agreement to draw. By definition you agree to end the game early because face-to-face diplomacy takes too long and people have lives to go back to.
It doesn't matter in this case how many centers you had. You failed to win. Everyone decided that it wasn't worth playing on, or were happy with their performance.
There is nothing unfair about this agreement, per the original rules.
As a side note; any points based system forms a meta-game. Webdip's 1

'daggers' are designed to limit the number of games a player can enter at one time (so you can't start 14 games and then drop out of all but the two where the 1801 moves suited you - this kind of behaviour is to be strongly discouraged) In the absence of a community who knows and recognises each other and worries about their reputation we need some system for meta-gaming.
The ideal system limits the influence internal to the board.
When we played league games we explicitly designed a meta-game based around playing four boards. And signed up to play the meta-game; this was excellent because you got an opportunity to betray or build up a reputation within your groups of players.
The ppsc model lacks any similar benefits. And has many downsides.