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.

Reads · Competitive PvP
A 3D arena fighter where extendable-arm punches curve mid-flight in PvP duels.

Execution · Competitive PvP
A competitive party platformer where placing obstacles to block others while surviving your own traps tests both execution and social prediction.
ARMS leans Reads (Competitive PvP); Ultimate Chicken Horse leans Execution (Competitive PvP).
Ultimate Chicken Horse leans a little harder on execution, though the gap is small.
ARMS
Curving punches and dodge timing
Ultimate Chicken Horse
Precise platforming through player-built obstacle courses is the ceiling
ARMS leans a little harder on reads, though the gap is small.
ARMS
Whiff-punish games against adapting humans
Ultimate Chicken Horse
Predicting what obstacles opponents will place is genuine social reads
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
ARMS
Minor stage and item randomness
Ultimate Chicken Horse
Block placement creates novel layouts each round
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
ARMS
Arm loadout counters and matchup study
Ultimate Chicken Horse
Optimal obstacle placement strategies are learnable over sessions
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.