head to head
Trials HD asks more than Super Mario World, and the gap is execution.

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

Execution · Pure Mechanics
Physics-balance execution refined over thousands of attempts on fixed tracks.
Super Mario World leans Execution (Pure Mechanics); Trials HD leans Execution (Pure Mechanics).
Trials HD leans clearly harder on execution.
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Trials HD
Throttle balance and weight shifts demand frame-tight physical control
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
Trials HD
Solo against static obstacle courses
Super Mario World leans a little harder on variance, though the gap is small.
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Trials HD
Tracks are identical every single attempt
Trials HD leans a little harder on optimization, though the gap is small.
Super Mario World
Secret exits and route knowledge add a modest solvable layer
Trials HD
Finding the optimal line through each obstacle rewards study
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.