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.

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

Execution · Competitive PvP
An online multiplayer soccer game about positioning and outplaying human opponents.
ARMS leans Reads (Competitive PvP); Soccer Online: Ball 3D leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
ARMS
Curving punches and dodge timing
Soccer Online: Ball 3D
Controlling shots and movement precisely matters in matches
ARMS leans a little harder on reads, though the gap is small.
ARMS
Whiff-punish games against adapting humans
Soccer Online: Ball 3D
Outguessing human opponents' passes and positioning is constant
Soccer Online: Ball 3D leans a little harder on variance, though the gap is small.
ARMS
Minor stage and item randomness
Soccer Online: Ball 3D
Some physics unpredictability but mostly skill-driven
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
Soccer Online: Ball 3D
Team coordination and positioning tactics reward planning
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.