head to head
Command & Conquer: Renegade asks more than Red Dead Redemption 2, and the gap is reads.

Execution · Practiced Mastery
FPS aim welded to a team economy of base-destruction priorities.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Command & Conquer: Renegade leans Execution (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Command & Conquer: Renegade leans a little harder on execution, though the gap is small.
Command & Conquer: Renegade
FPS aim in infantry and vehicle fights carries the game
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Command & Conquer: Renegade leans clearly harder on reads.
Command & Conquer: Renegade
Multiplayer base assaults involve predicting human team pushes
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.
Command & Conquer: Renegade
Maps and economy rules are fully known
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Renegade
Credit economy and building-target priority decide C&C-mode matches
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.