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
One-hit-kill room clearing where dive timing and aim decide everything.
Super Mario World leans Execution (Pure Mechanics); The Hong Kong Massacre leans Execution (Pure Mechanics).
The Hong Kong Massacre leans a little harder on execution, though the gap is small.
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
The Hong Kong Massacre
One-hit deaths make dive-and-shoot precision 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
The Hong Kong Massacre
Enemies react on fixed triggers, never modelling you
The Hong Kong Massacre leans a little harder on variance, though the gap is small.
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
The Hong Kong Massacre
Enemy placements are scripted-but-unknown on first attempt
The Hong Kong Massacre leans a little harder on optimization, though the gap is small.
Super Mario World
Secret exits and route knowledge add a modest solvable layer
The Hong Kong Massacre
Room-clearing order and slow-mo budgeting reward planning
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.