The Blue team is smaller. It has not warmed up. It hasn't played Capture the Flag as much as the Red team, just like

During the American Revolution the 13 US colonies (blue) were trying to get independence from Britain(red) they weren’t trying to get control of or conquer Britain(get their flag) instead they were trying to keep Britain from having complete control of them so they could free themselves from them( keep them from getting all their flags)

Explanation:

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.