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

Execution · Pure Mechanics
High-speed arena shooter with twitch duels and warfare-scale vehicle modes.
Counter-Strike: Condition Zero leans Execution (Competitive PvP); Unreal Tournament III leans Execution (Pure Mechanics).
Unreal Tournament III leans a little harder on execution, though the gap is small.
Counter-Strike: Condition Zero
aim and spray control decide duels
Unreal Tournament III
Hitscan precision, dodge timing, and vehicle handling rule fights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Condition Zero
predicting human opponent positioning
Unreal Tournament III
Human opponents vary routes and dueling habits
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
Unreal Tournament III
Open arenas with fully visible pickups and players
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
Unreal Tournament III
Weapon spawns and power-up timing reward map study
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.