User blog comment:Ixarising/High School DxD Dream Battle/@comment-1359322-20140215141525/@comment-24468758-20140215171612

Difficult question, since both teams improved quite much and Sona got two new very powerful servants. But since both teams know the abilities of the other Sona lost an advantage she had in the first game in which some of her servants abilities were unknown.

In a power restricted game Rias would still have an advantage in combat, but as seen in the first game Sona still has the tactical advantage, so their chances would be even.

In an all-out battle Rias has a huge advantage, since Rias' servants are without exception very powerful and Issei could use all of his abilities with utmost force. Saji in Dragon King form would pose a problem but Issei could use Ascalon and Kiba Gram against which Saji doesn't stand a chance. As a result a clear victory for the " super-power team that knows some techniques"(Vol.14 Life 4).