head to head
Terraria asks more than Stardew Valley, and the gap is execution.

Optimization · Pure Optimization
A farm-life sim solved by season routing and profit optimization.

Optimization · Pure Optimization
A 2D sandbox where preparation and gear tiering carry boss fights.
Stardew Valley leans Optimization (Pure Optimization); Terraria leans Optimization (Pure Optimization).
Terraria leans clearly harder on execution.
Stardew Valley
Trivial timing on fishing and combat
Terraria
Boss fights require dodging and aim under pressure.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Stardew Valley
No adaptive opponent exists
Terraria
Bosses use scripted attacks; no adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Stardew Valley
Crop luck and geode RNG matter modestly
Terraria
World seeds and loot drops randomized.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Stardew Valley
Routing seasons, profit loops, and bundles dominates
Terraria
Gear progression and arena prep solve every boss.
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.