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

Execution · Practiced Mastery
Memorising stage routes and executing them cleanly for ranks and speed.

Execution · Practiced Mastery
A pastel platformer where Yoshi carries Baby Mario and perfect scores demand finding everything.
Sonic Adventure 2: Battle leans Execution (Practiced Mastery); Super Mario World 2: Yoshi's Island leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Adventure 2: Battle
Speed-stage control and rail precision reward clean hands
Super Mario World 2: Yoshi's Island
Egg-aiming and flutter jumps for 100 percent scores
Sonic Adventure 2: Battle leans a little harder on reads, though the gap is small.
Sonic Adventure 2: Battle
Two-player battles exist but stay shallow and scripted
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.
Sonic Adventure 2: Battle
Stages are fixed; Chao stats are deterministic grinding
Super Mario World 2: Yoshi's Island
Collectibles hidden only until found
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Adventure 2: Battle
Rank chasing means memorising routes and score lines
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.