head to head
Red Dead Redemption 2 asks more than Half-Life 2: Lost Coast, and the gap is optimization.

Execution · Practiced Mastery
A short graphics showcase testing basic shooter execution for twenty minutes.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Half-Life 2: Lost Coast leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Red Dead Redemption 2 leans a little harder on execution, though the gap is small.
Half-Life 2: Lost Coast
A short stretch of standard Half-Life 2 gunplay
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
Half-Life 2: Lost Coast
A handful of scripted Combine soldiers
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Red Dead Redemption 2 leans a little harder on variance, though the gap is small.
Half-Life 2: Lost Coast
One fixed level with nothing hidden
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Red Dead Redemption 2 leans clearly harder on optimization.
Half-Life 2: Lost Coast
Too brief to develop any systems layer
Red Dead Redemption 2
Loadouts and routes solvable but loose.
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.