head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Twitch Chaos
An infinite runner testing reactive jump timing over randomized obstacles.

Execution · Twitch Chaos
An endless runner testing swipe reflexes against procedurally generated obstacle streams.
Meme Run leans Execution (Twitch Chaos); Subway Surfers leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Meme Run
Jump timing over obstacles is the whole interaction
Subway Surfers
Swipe reaction speed at increasing pace is everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Meme Run
Solo - no opponent to predict
Subway Surfers
No opponent - just oncoming obstacles
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Meme Run
Obstacle spawns randomized for distance runs
Subway Surfers
Procedural track segments keep each run unseen ahead
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Meme Run
Minimal systems beyond reactive survival
Subway Surfers
Powerup upgrades matter little beyond reflex play
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.