head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Pure Mechanics
Spectacle hack-and-slash where reflexes and combo flow drive every fight.

Execution · Practiced Mastery
Crowd-control execution against memorised enemy patterns, stage by stage.
God of War III leans Execution (Pure Mechanics); Streets of Rage leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
God of War III
Combo execution and QTE timing carry combat.
Streets of Rage
Spacing, crowd control and throw timing carry every stage
God of War III leans a little harder on reads, though the gap is small.
God of War III
Bosses fully scripted spectacle.
Streets of Rage
Enemy gangs attack from fixed arcade patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
God of War III
Almost no randomness.
Streets of Rage
Spawns are essentially deterministic per stage
Streets of Rage leans a little harder on optimization, though the gap is small.
God of War III
Upgrade paths short and obvious.
Streets of Rage
One-credit clears come from learned positioning and patterns
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.