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
Sprawling action horror with four campaigns and a surprisingly deep combat system.

Execution · Practiced Mastery
Ballistic compensation and patrol memorisation along heavily scripted stealth corridors.
Resident Evil 6 leans Execution (Practiced Mastery); Sniper: Ghost Warrior 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.
Resident Evil 6
Deep melee-and-gunplay movement system rewards mechanics
Sniper: Ghost Warrior
Accounting for wind and drop on long shots demands steady aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Resident Evil 6
Agent Hunt PvP adds a sliver of prediction
Sniper: Ghost Warrior
Enemy AI runs scripted patrols, not adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Resident Evil 6
Set-piece campaigns are fixed after first sight
Sniper: Ghost Warrior
Wind values add per-shot noise to compensate for
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Resident Evil 6
Skill builds and Mercenaries combos are learnable
Sniper: Ghost Warrior
Learning patrol routes and stealth paths solves each level
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.