Size Really Matters
Ever since the Hyper Generation introduced space suppression technology, red humanity finally gained an effective counter against the ubiquitous transphasic energy shields so loved by the native aliens.
The original residents of the Red Ocean had occupied the dwarf galaxy for so long that they had accumulated huge reserves of phasewater.
They had so much more time to harvest phasewater and invest it in the construction of lots of warships and other combat craft.
This was one of the biggest reasons why linefighters suffered so many losses at the frontlines.
The Red Two and the first-rate superstates were in better shape. Their vast wealth and power easily allowed them to gather enough phasewater to equip their premier combat units with transphasic weapons and defenses.
Other groups, especially the more grassroots ones, did not enjoy this particular luxury!