The rules on how the winner is determined is also important.
Among our group of friends about 80% went First Order and only a couple of us went Resistance. I feel like the First Order probably got more supporters because Phasma is a more interesting hero than Finn and the First Order has more flashy troops in general.
If the winner is ultimately determined by who got more supporters then I goofed up. If the winner is determined by who got the higher percentage of of quests done then maybe either side could win. Some kind of information on how the winner is determined would be great. Right now there seems to be no feedback and no real way to help your side except to do this extremely easy quests.