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

Optimization · Pure Optimization
Remake of Gaiden with dual protagonists and explorable dungeons.

Optimization · Systems & Chaos
Managing an unreliable police roster against random calls and solvable tactics.
Fire Emblem Echoes: Shadows of Valentia leans Optimization (Pure Optimization); This Is the Police 2 leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Echoes: Shadows of Valentia
Turn-based menus only
This Is the Police 2
Menu management and slow tactical turns need no dexterity
This Is the Police 2 leans a little harder on reads, though the gap is small.
Fire Emblem Echoes: Shadows of Valentia
Scripted enemies on both routes
This Is the Police 2
Story actors and criminals are scripted
This Is the Police 2 leans a little harder on variance, though the gap is small.
Fire Emblem Echoes: Shadows of Valentia
Hit RNG plus dungeon encounters
This Is the Police 2
Call outcomes and officer quirks roll unpredictably
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Echoes: Shadows of Valentia
Dual-army routing and class promotions
This Is the Police 2
Roster management, dispatch triage and tactical positioning are 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.