head to head
Super Meat Boy asks more than Hudson's Adventure Island, and the gap is execution.

Execution · Pure Mechanics
A punishing retro platformer where precise jump timing is everything.

Execution · Pure Mechanics
A brutally precise platformer about dying thousands of times.
Hudson's Adventure Island leans Execution (Pure Mechanics); Super Meat Boy leans Execution (Pure Mechanics).
Super Meat Boy leans clearly harder on execution.
Hudson's Adventure Island
tight platform jumps, brutal timing windows
Super Meat Boy
Pure twitch platforming, frame-perfect jumps
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hudson's Adventure Island
fixed enemy patterns, no adaptation
Super Meat Boy
No adaptive opponent
Hudson's Adventure Island leans a little harder on variance, though the gap is small.
Hudson's Adventure Island
fruit/egg drops randomized
Super Meat Boy
Fully deterministic levels
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Hudson's Adventure Island
level route and skateboard memorization
Super Meat Boy
Route memorization optimizes times
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.