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

Optimization · Pure Optimization
A streamlined click-along action RPG famous for its seamless world.

Optimization · Pure Optimization
Iterating cause-and-effect sequences to untangle a fixed narrative puzzle.
Dungeon Siege leans Optimization (Pure Optimization); Last Day of June 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.
Dungeon Siege
Combat mostly resolves itself
Last Day of June
Slow walking and simple interactions, no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeon Siege
Mobs charge on simple scripts
Last Day of June
No opponent - a fixed narrative system
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeon Siege
Loot drops vary modestly
Last Day of June
Consequences of changes are hidden until tried
Dungeon Siege leans a little harder on optimization, though the gap is small.
Dungeon Siege
Party builds and pack-mule logistics are the game
Last Day of June
Sequencing the four characters' actions is the puzzle
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.