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
Twitch tank duels while protecting a base from scripted enemy waves.

Execution · Pure Mechanics
High-tempo brawler execution against fixed crowd choreography.
Battle City leans Execution (Pure Mechanics); Midnight Fight Express leans Execution (Pure Mechanics).
Midnight Fight Express leans a little harder on execution, though the gap is small.
Battle City
Tank aim and dodge timing under pressure decides every stage
Midnight Fight Express
Crowd-control timing, counters and weapon juggling carry levels
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Battle City
Enemy tanks follow simple scripted routines, nothing adaptive
Midnight Fight Express
Thugs attack on scripted cues
Battle City leans a little harder on variance, though the gap is small.
Battle City
Spawn order and power-ups add mild randomness per stage
Midnight Fight Express
Fixed level setups every attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Battle City
Base-defense positioning and brick management have known best answers
Midnight Fight Express
Skill unlocks and route knowledge polish scores
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.