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
A stealth-puzzle platformer where solving guard patrol routes is the core test.

Execution · Practiced Mastery
A pastel platformer where Yoshi carries Baby Mario and perfect scores demand finding everything.
Stealth Bastard Deluxe leans Optimization (Practiced Mastery); Super Mario World 2: Yoshi's Island leans Execution (Practiced Mastery).
Super Mario World 2: Yoshi's Island leans a little harder on execution, though the gap is small.
Stealth Bastard Deluxe
precise timing to avoid detection and traps
Super Mario World 2: Yoshi's Island
Egg-aiming and flutter jumps for 100 percent scores
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Stealth Bastard Deluxe
scripted guard patrols, not adaptive
Super Mario World 2: Yoshi's Island
All enemies are scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Stealth Bastard Deluxe
minimal randomness, deterministic levels
Super Mario World 2: Yoshi's Island
Collectibles hidden only until found
Stealth Bastard Deluxe leans a little harder on optimization, though the gap is small.
Stealth Bastard Deluxe
route planning, stealth pattern solving
Super Mario World 2: Yoshi's Island
Perfect-score runs demand full collectible routing
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.