head to head
World Tour Soccer 2002 asks more than Half-Life 2, and the gap is reads.

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

Execution · Pure Mechanics
An arcade-style soccer simulation with licensed national teams.
Half-Life 2 leans Execution (Pure Mechanics); World Tour Soccer 2002 leans Execution (Pure Mechanics).
World Tour Soccer 2002 leans a little harder on execution, though the gap is small.
Half-Life 2
Gravity gun and shooting demand precision.
World Tour Soccer 2002
player control, passing and shooting precision
World Tour Soccer 2002 leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
World Tour Soccer 2002
opponent play in human matches adds reads
World Tour Soccer 2002 leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
World Tour Soccer 2002
minor bounce/ref randomness
World Tour Soccer 2002 leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
World Tour Soccer 2002
tactics and formation choices solvable
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.