head to head
Tenchu: Stealth Assassins 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
The pioneering ninja stealth game of rooftop grappling and one-strike assassinations in feudal Japan.
Red Dead Redemption 2 leans Execution (Practiced Mastery); Tenchu: Stealth Assassins 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.
Tenchu: Stealth Assassins
Grapple movement and stealth-kill timing
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.
Tenchu: Stealth Assassins
Guards patrol on fixed routes
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Tenchu: Stealth Assassins
Item drops and unseen layouts first run
Tenchu: Stealth Assassins leans clearly harder on optimization.
Red Dead Redemption 2
Loadouts and routes solvable but loose.
Tenchu: Stealth Assassins
Guard routes and Grand Master paths solvable
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.