The war queue and actual matchup experience makes it pretty clear that there are mostly high level squads with a lot of 100K medals or beginner squads with a mix of Level 3 through 10, and possibly one Prestige in the lineups. The Prestige though, is not a max player and most likely has under 20K in medals and under 1K wins under their belt. The high level squads on the Imperial side seem to get matched up quickly and the new squads tend to wait a long time. Very few comparable rebel squads in the queue for them to match up against. If you use a Prestige player with over 30K medals in your lineup and you are a rebel squad, you will probably cross the threshold and get matched up with one of the high end Imperial squads. Better to leave the Prestige player out of it, if you want to launch a lower HQ war. I will say that given the outpost buffs and the proliferation of MTT's, ITT's and A5's. The matchups don't matter as much anymore.
We launched a war with just 2 Prestige players with only 25K and 11K medals respectively, and the rest of the squad was level 10 through 4. Only 5 players total at level 9 or above. A couple of 8's. We faced a squad with 12 Prestige, 1 level 10, and 2 level 8's. We had a chance to tie at the end and only lost by a score of 45-43.
Squad Level: 50
We are always looking for active players. We have a squad of 25+ members, and we war twice a week. We have maxed out our Perks. We like helping new players, so all players are welcome!