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
A warm, classic JRPG adventure with deep alchemy crafting.

Optimization · Pure Optimization
Generous team-building optimisation against fixed Kalos trainers.
Dragon Quest VIII: Journey of the Cursed King leans Optimization (Pure Optimization); Pokémon Y leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Quest VIII: Journey of the Cursed King
Turn-based menus, zero dexterity
Pokémon Y
Turn-based menus have no physical ceiling
Pokémon Y leans a little harder on reads, though the gap is small.
Dragon Quest VIII: Journey of the Cursed King
Monsters act on fixed logic
Pokémon Y
Campaign trainers are scripted; online play is a separate pursuit
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Quest VIII: Journey of the Cursed King
Battle RNG, drops, and casino luck
Pokémon Y
Encounters and rolls add bounded, mappable randomness
Pokémon Y leans a little harder on optimization, though the gap is small.
Dragon Quest VIII: Journey of the Cursed King
Skill points, alchemy, and tension are optimizable
Pokémon Y
Mega evolutions and EV tools make optimisation 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.