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.

Execution · Competitive PvP
A tactical shooter where precise gunplay against human opposition is the deciding skill.

Execution · Competitive PvP
Arc System Works' Persona spinoff fighter where summoned Personas double every character's offense.
Counter-Strike: Condition Zero leans Execution (Competitive PvP); Persona 4 Arena Ultimax 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.
Counter-Strike: Condition Zero
aim and spray control decide duels
Persona 4 Arena Ultimax
Persona combos, one-more cancels, and tight confirms need real hands.
Persona 4 Arena Ultimax leans a little harder on reads, though the gap is small.
Counter-Strike: Condition Zero
predicting human opponent positioning
Persona 4 Arena Ultimax
Awakening threats and persona-break baits stay human guessing.
Counter-Strike: Condition Zero leans a little harder on variance, though the gap is small.
Counter-Strike: Condition Zero
buy-round economy and drops vary slightly
Persona 4 Arena Ultimax
Deterministic; status effects are earned, not random.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Condition Zero
economy management and utility usage solvable
Persona 4 Arena Ultimax
Persona card management and burst routing are labbable.
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.