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 · Practiced Mastery
Episodic survival horror pairing scarce-resource tension with co-op character switching.

Optimization · Practiced Mastery
Routing efficient digs and upgrades through a randomised mine.
Resident Evil Revelations 2 leans Optimization (Practiced Mastery); SteamWorld Dig leans Optimization (Practiced Mastery).
Resident Evil Revelations 2 leans a little harder on execution, though the gap is small.
Resident Evil Revelations 2
Aiming under pressure and dodge timing against enemies.
SteamWorld Dig
Digging and platforming need modest precision
Resident Evil Revelations 2 leans a little harder on reads, though the gap is small.
Resident Evil Revelations 2
Scripted enemies and co-op partner; no adaptive opposition.
SteamWorld Dig
Enemies follow simple fixed patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Resident Evil Revelations 2
First-run scares, unknown layouts, raid mode loot rolls.
SteamWorld Dig
Randomised mine layouts hide ore and hazards each run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Resident Evil Revelations 2
Resource routing, enemy spawn knowledge, episode mastery once mapped.
SteamWorld Dig
Upgrade routing and efficient dig paths drive progress
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.