head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Aiming at bloon waves while solving a tower-defense upgrade economy first-person.

Execution · Practiced Mastery
Ballistics compensation along tightly scripted sniping corridors.
Apes vs Helium leans Execution (Practiced Mastery); Sniper: Ghost Warrior 2 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Apes vs Helium
An aimbot popping every bloon would trivialise the waves
Sniper: Ghost Warrior 2
Breath control, wind and drop compensation on every shot
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Apes vs Helium
Bloons follow fixed tracks, nothing adapts
Sniper: Ghost Warrior 2
Enemies run scripted patrols and alarms
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Apes vs Helium
Wave composition is learnable, little stays hidden
Sniper: Ghost Warrior 2
Wind values randomise individual shot solutions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Apes vs Helium
Upgrade and class economy against known waves is solvable
Sniper: Ghost Warrior 2
Memorising target sequences and stealth routes carries missions
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.