In Carnage, the players are ranked 1 through 7 by centers and then given points based on their ranking.
Each game is worth 28,034 pts. If you solo, you get them all.
If the game ends in a draw, then the players are ranked by center count, through order of elimination, as necessary. If you top the board, you get 7,000 pts. Second highest center count gets 6,000 pts. Down to 1,000 pts for the lowest center count or the first person eliminated.
In addition, each player gets 1 pts per supply center at the end of the game. These points essentially act as a tiebreaker. So, if you top with 10 centers, that's worth 7,010 pts. Finally, if two players share a rank, they split the points for those two positions. If two guys top the board with 10 centers each, they each score 6,510 pts.
Here are 3 examples of scoring:
[Power: SC, pts]
Russia: 18; 28,034
Turkey: 3; 0
France: 6; 0
Germany: 4; 0
England: 3; 0
Italy: 0(2nd); 0
Austria: 0(1st); 0
[Power: SC, pts]
Russia: 14; 7014
Turkey: 7; 6007
France: 6; 5006
Germany: 4; 4004
England: 3; 3003
Italy: 0(2nd); 2000
Austria: 0(1st); 1000
[Power: SC, pts]
England: 8; 6508
Russia: 8; 6508
France: 7; 5007
Turkey: 6; 4006
Italy: 4; 3004
Austria: 1; 2001
Germany: 0; 1000
To recap: The scoring has a pure WINNER TAKES ALL part. It then rewards you for what rank you are, with the exact amount of SC only mattering for tie breakers. The over-arching idea is that there is little to no reason to just keep bashing on someone who's already down while naturally rewarding being in the lead and being a higher SC count than others. It should not result in any unnatural play, certainly not more than any other scoring system out there. With only three rounds that means a solo automatically beats any combination of non-soloing scores (maximal non-solo score for a single round is obviously 7017 pts, even if you got that all three rounds you would still be far behind a single solo).
The main consequence being that for example, if Italy had 3 and Austria had 2, it wouldn’t change the amount of points they got except for tiebreakers. Also there's no real reason for, say, Turkey to be OK with Italy being eliminated by someone else since it doesn't help his score at all, so minor powers are more likely to be allowed to keep playing rather than cut out.