The performance gap is just too large!
2.5 Mach is not a small number, but it depends on the context. Facing Lille, whose normal speed is already 4 Mach, these planes are nothing but turtles!
Moreover, in terms of agility, these fighter jets are far inferior to Lille. Their top air-to-air missiles can barely reach a speed of 4 Mach, but what's the use if they can't hit the target?!
[Pilot #0076: He's gone! I can't see him...]
[Pilot #0063: He's here with me, he's on my cockpit, he—boom!]
[Pilot #0102: He's behind me—sizzle.]
The massive performance advantage made the Military Technology pilots seem as if they were fighting a ghost, and the roar of explosions nearly tore the sky apart!