User blog comment:MrDeaf/Strongest PvP fleet （仮）/@comment-24978536-20151004041719

That Fusou and Yamashiro in the fleet are a double edged sword really. It is true they can damage SS, possibly eliminating an easy B-Rank day win with SS fleet. However, against a composition such as 5 BB / 1 SS it is a weakness, or rather, a hindrance. The second and third shelling turn are essentially wasted, wasting crucial turns to damage the other fleet. Depending on the engagement form and RNG, the battle might even end on a S-rank in day battle.

That is still one of the most difficult compositions I've seen though. I'd probably go with a full SS fleet myself, maybe add a DD as a flagship to leech exp and rely on night battle to score a win. I have very few BB that really need the experience from PVP and it would be a waste of resources.