In the Galaxy, military achievements among civilizations were never just about who had more warships, who had bigger cannons, or whose technology was more advanced. True military geniuses would use every means possible to create favorable conditions for themselves.
Su Beisi was not entirely unaware of his opponents, the Iridium Star people; he knew that their technological level surpassed most mid-level civilizations, and it might even be at the level of a high-level civilization. However, the Star Alliance, formed after the Iridium Star people teamed up with Earth, also had significant flaws.