User blog comment:Shinhwalee/Guide to Power Leveling Heavy Cruiser (CA) in World 3-2A/@comment-66.249.82.228-20150609053549/@comment-84.90.161.45-20150712214138

As long as the escorts have lower firepower (with equips) than the flagship, it's OK. Lower firepower on escorts reduce the chance of stealing MVP. I'd say that those 15.2cm main guns are perfect for the job.