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
Plannable stealth routing punctuated by precise ballistic marksmanship.

Execution · Practiced Mastery
A Star Wars shooter that adds lightsabers and Force-power progression.
Sniper Elite III leans Execution (Practiced Mastery); Star Wars Jedi Knight: Dark Forces II 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.
Sniper Elite III
Ballistic long shots demand steady, compensated aim
Star Wars Jedi Knight: Dark Forces II
Saber timing and platforming over huge levels
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sniper Elite III
Enemy AI follows mappable alert and search routines
Star Wars Jedi Knight: Dark Forces II
Multiplayer duels existed; campaign AI is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sniper Elite III
Patrol details and wind vary slightly per attempt
Star Wars Jedi Knight: Dark Forces II
Sprawling levels surprise once then map out
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sniper Elite III
Open maps reward planned routes, sound masking and relocation
Star Wars Jedi Knight: Dark Forces II
Force power allocation and routing reward planning
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.