head to head
Super Meat Boy asks more than Half-Life 2, and the gap is execution.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
A brutally precise platformer about dying thousands of times.
Half-Life 2 leans Execution (Pure Mechanics); Super Meat Boy leans Execution (Pure Mechanics).
Super Meat Boy leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Super Meat Boy
Pure twitch platforming, frame-perfect jumps
Half-Life 2 leans a little harder on reads, though the gap is small.
Half-Life 2
Combine AI scripted, non-adaptive.
Super Meat Boy
No adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Almost no randomness.
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.
Half-Life 2
Linear progression with no builds.
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.