arena

This is the only plausible scenario!

Using corrin and ATiki dont help bst wise. And ninian brings the score down a little. U must be using at least one of them, but either way that score kinda make sense.

It really comes down to skills. U need heavy cost skills like aether, heavy blade, and panic ploy. Or at the VERY least swap ur specials for AOE specials since they cost more.

Like swaping one of ur dragons for BLyn could actually help ur score ,even tho shes a calvary archer, since she is just LOADED with heavy cost skills.

Arena in higher tiers is tricky since u often need to run less optimal builds in order to guarantee higher score.
Ex: a guy running distant counter on a +10 ryoma

Lmao, that would be hilarious though :P