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

Optimization · Practiced Mastery
A looter-shooter loop testing build optimisation more than the shooting itself.

Optimization · Practiced Mastery
An action horror game where a death-row inmate fights execution-themed monsters during a prison island breakout.
Suicide Squad: Kill the Justice League leans Optimization (Practiced Mastery); The Suffering leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Suicide Squad: Kill the Justice League
Traversal-shooting needs moderate aim, generous by shooter standards
The Suffering
Fast shooting and the Insanity transformation reward sharp play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Suicide Squad: Kill the Justice League
Brainwashed bosses are scripted encounters
The Suffering
Malefactors attack on fixed archetype patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Suicide Squad: Kill the Justice League
Loot rolls gate the live-service grind
The Suffering
Unknown spawns and morality outcomes on a blind run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Suicide Squad: Kill the Justice League
Gear builds and mission farming dominate endgame
The Suffering
Weapon choice, rage meter use, and routes are learnable
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.