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.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.

Execution · Pure Mechanics
A rail-shooter endurance test of target tracking against memorised enemy waves.
Super Mario World leans Execution (Pure Mechanics); T2: The Arcade Game leans Execution (Pure Mechanics).
T2: The Arcade Game leans a little harder on execution, though the gap is small.
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
T2: The Arcade Game
Tracking dozens of targets with cursor speed is everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario World
Scripted Koopas adapt to nothing
T2: The Arcade Game
Waves are choreographed, nothing adapts
T2: The Arcade Game leans a little harder on variance, though the gap is small.
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
T2: The Arcade Game
Spawn details blur slightly but patterns dominate
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario World
Secret exits and route knowledge add a modest solvable layer
T2: The Arcade Game
Learning wave order and powerup spots stretches credits
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.