Why no war? It is my understanding that Sphere Builders tried to invade the universe but not in the Delphic Expanse. Procyon V is near Andoria, if I'm not mistaken. After being defeated, Sphere Builders tried to alter the future by building the spheres in the Expanse. In other words, Enterprise defeated the second attempt of invasion.
Daniels said it was the same Expanse Archer's Enterprise was currentlyin , grown 50,000 light years+ by the time of the battle. He also said it was an alternate timeline, a possible future.