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 · Systems & Chaos
A bubble-popping puzzle testing cluster planning against random drops.

Optimization · Practiced Mastery
Routing efficient digs and upgrades through a randomised mine.
Adventure Pop leans Optimization (Systems & Chaos); SteamWorld Dig leans Optimization (Practiced Mastery).
SteamWorld Dig leans a little harder on execution, though the gap is small.
Adventure Pop
Tapping bubble clusters needs little precision
SteamWorld Dig
Digging and platforming need modest precision
Adventure Pop leans a little harder on reads, though the gap is small.
Adventure Pop
Opponents don't adapt to your strategy meaningfully
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.
Adventure Pop
Bubble drops are random, shaping each board
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.
Adventure Pop
Cluster planning and power-up use are the core test
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.