head to head
Suicide Squad: Kill the Justice League asks more than Red Dead Redemption 2, and the gap is optimization.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.

Optimization · Practiced Mastery
A looter-shooter loop testing build optimisation more than the shooting itself.
Red Dead Redemption 2 leans Execution (Practiced Mastery); Suicide Squad: Kill the Justice League 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.
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Suicide Squad: Kill the Justice League
Traversal-shooting needs moderate aim, generous by shooter standards
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Suicide Squad: Kill the Justice League
Brainwashed bosses are scripted encounters
Suicide Squad: Kill the Justice League leans a little harder on variance, though the gap is small.
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Suicide Squad: Kill the Justice League
Loot rolls gate the live-service grind
Suicide Squad: Kill the Justice League leans clearly harder on optimization.
Red Dead Redemption 2
Loadouts and routes solvable but loose.
Suicide Squad: Kill the Justice League
Gear builds and mission farming dominate endgame
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.