head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Systems & Chaos
Solvable micro-tactics puzzles gated by gacha luck over unit ownership.

Optimization · Systems & Chaos
Turn-based squad tactics managing dice odds and positioning in 40K corridors.
Fire Emblem Heroes leans Optimization (Systems & Chaos); Space Crusade leans Optimization (Systems & Chaos).
Space Crusade leans a little harder on execution, though the gap is small.
Fire Emblem Heroes
Drag-and-drop tactics need no dexterity
Space Crusade
Turn-based - no twitch demands at all
Space Crusade leans a little harder on reads, though the gap is small.
Fire Emblem Heroes
Arena defense teams are AI-run, so prediction is shallow
Space Crusade
Multiplayer rewards limited reading of opponent moves
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Heroes
Gacha summoning rolls gate which units you even own
Space Crusade
Dice rolls drive combat outcomes significantly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Heroes
Skill inheritance, team building and tile math are deeply solvable
Space Crusade
Squad composition, positioning and mission tactics are the core
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.