head to head
Borderlands 2 asks more than Fire Emblem Heroes, and the gap is execution.

Optimization · Systems & Chaos
Loot-shooter RPG built on gear chasing.

Optimization · Systems & Chaos
Solvable micro-tactics puzzles gated by gacha luck over unit ownership.
Borderlands 2 leans Optimization (Systems & Chaos); Fire Emblem Heroes leans Optimization (Systems & Chaos).
Borderlands 2 leans clearly harder on execution.
Borderlands 2
Aim matters but generous hit feel
Fire Emblem Heroes
Drag-and-drop tactics need no dexterity
Fire Emblem Heroes leans a little harder on reads, though the gap is small.
Borderlands 2
Enemies are scripted loot fodder
Fire Emblem Heroes
Arena defense teams are AI-run, so prediction is shallow
Borderlands 2 leans a little harder on variance, though the gap is small.
Borderlands 2
Procedurally generated weapon drops vary
Fire Emblem Heroes
Gacha summoning rolls gate which units you even own
Borderlands 2 leans a little harder on optimization, though the gap is small.
Borderlands 2
Skill trees and gear math heavily solved
Fire Emblem Heroes
Skill inheritance, team building and tile math are deeply solvable
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.