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

Execution · Pure Mechanics
High-tempo brawler execution against fixed crowd choreography.

Execution · Practiced Mastery
Crowd-control execution against memorised enemy patterns, stage by stage.
Midnight Fight Express leans Execution (Pure Mechanics); Streets of Rage leans Execution (Practiced Mastery).
Midnight Fight Express leans a little harder on execution, though the gap is small.
Midnight Fight Express
Crowd-control timing, counters and weapon juggling carry levels
Streets of Rage
Spacing, crowd control and throw timing carry every stage
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Midnight Fight Express
Thugs attack on scripted cues
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.
Midnight Fight Express
Fixed level setups every attempt
Streets of Rage
Spawns are essentially deterministic per stage
Streets of Rage leans a little harder on optimization, though the gap is small.
Midnight Fight Express
Skill unlocks and route knowledge polish scores
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.