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
A subversive JRPG where understanding rolling HP mechanics and PSI optimization defeats its quirky scripted encounters.

Optimization · Systems & Chaos
A gentle remake of the original Pokémon Mystery Dungeon rescue adventures with modern conveniences.
EarthBound leans Optimization (Pure Optimization); Pokémon Mystery Dungeon: Rescue Team DX leans Optimization (Systems & Chaos).
EarthBound leans a little harder on execution, though the gap is small.
EarthBound
Rolling HP meter has very mild timing implication
Pokémon Mystery Dungeon: Rescue Team DX
Turn-based with auto-modes; no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
EarthBound
All enemies scripted with fixed attack patterns
Pokémon Mystery Dungeon: Rescue Team DX
No adaptive opponent
Pokémon Mystery Dungeon: Rescue Team DX leans a little harder on variance, though the gap is small.
EarthBound
PSI randomness, enemy attack variety, and encounter triggers add unpredictability
Pokémon Mystery Dungeon: Rescue Team DX
Random dungeons softened by generous remake systems
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
EarthBound
Status effects, rolling HP strategy, and Franklin Badge usage are solvable
Pokémon Mystery Dungeon: Rescue Team DX
Team building and rare qualities reward planning
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.