I think it's been said here plenty already, but there is more to the team than the citadel upgrades. That's what the favor points seek to reward. There are a ton things involved in enabling your team to win. Destroying structures allows you to strike key positions. Killing Demigods cuts down on your team's opposition. Buying citadel upgrades defends your team while giving them some extra power to push with. Capturing flags provides bonuses and rallying points.
Just to make it clear about where all the awards went in this game:
OrleanKnight: Winner (30)
mcmjon: Least Deaths (25), Most Flags (20), Most Structures (20), Most Gold (15), Winner (30)
iamkira: Most Kills (25), Least Deaths (25), Most Assists (20), Most Damage (25), Most Grunts (20), Longest Kill Streak (25), Participant (5)
oogachak: Most Kills (25), Least Deaths (25), Most Assists (20), Longest Kill Streak (25), Citadel Upgrades (15), Participant (5)
We'll take another pass through these awards soon, to a set of values that properly reward all the different ways you enable your team.