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 · Pure Mechanics
An aerial arena shooter testing twitch piloting and prediction of human dogfighters.
Counter-Strike: Condition Zero leans Execution (Competitive PvP); Strike Vector EX leans Execution (Pure Mechanics).
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
Strike Vector EX
High-speed vector-switching dogfights demand precise aim and control
Counter-Strike: Condition Zero leans a little harder on reads, though the gap is small.
Counter-Strike: Condition Zero
predicting human opponent positioning
Strike Vector EX
Predicting human pilots' transform timing wins duels
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Condition Zero
buy-round economy and drops vary slightly
Strike Vector EX
Spawns and pickups add minor noise
Counter-Strike: Condition Zero leans a little harder on optimization, though the gap is small.
Counter-Strike: Condition Zero
economy management and utility usage solvable
Strike Vector EX
Loadout counters and map knowledge sit underneath
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.