head to head
Soul Edge 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
An early weapon-based fighting game built on execution and human matchup reads.
Half-Life 2 leans Execution (Pure Mechanics); Soul Edge leans Execution (Pure Mechanics).
Soul Edge leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Soul Edge
precise inputs, spacing, and combo timing
Soul Edge leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
Soul Edge
human opponents can be out-predicted in neutral
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.
Soul Edge
minimal randomness in outcomes
Soul Edge leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Soul Edge
movelist knowledge and matchup optimization
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.