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 · Pure Optimization
Engineering unit pairings and reclass paths to dominate maps whose enemy scripts are fully mappable.

Optimization · Pure Optimization
A blade-driven JRPG won by chain-attack routing and combo optimization.
Fire Emblem: Awakening leans Optimization (Pure Optimization); Xenoblade Chronicles 2 leans Optimization (Pure Optimization).
Xenoblade Chronicles 2 leans a little harder on execution, though the gap is small.
Fire Emblem: Awakening
No twitch elements; pair-up placement is the only spatial decision under time
Xenoblade Chronicles 2
Auto-attack with art-timing inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem: Awakening
Enemies follow simple aggro patterns on fixed maps
Xenoblade Chronicles 2
Scripted enemies
Fire Emblem: Awakening leans a little harder on variance, though the gap is small.
Fire Emblem: Awakening
Hit and crit rates plus random level-up stats create run variance
Xenoblade Chronicles 2
Blade gacha and crit rolls
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem: Awakening
Marriage pairings and Second Seal reclass chains are the optimization spine
Xenoblade Chronicles 2
Blade combos and chain attack routing central
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.