head to head
Neither is simply harder - they are hard in different places. Grand Theft Auto V demands more reads; Smoke and Sacrifice demands more variance.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Optimization · Practiced Mastery
A survival RPG testing how you learn and exploit a rule-driven living ecosystem.
Grand Theft Auto V leans Execution (Practiced Mastery); Smoke and Sacrifice leans Optimization (Practiced Mastery).
Grand Theft Auto V leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Smoke and Sacrifice
Real-time combat against wildlife needs moderate timing
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Smoke and Sacrifice
The ecosystem reacts by rules, not by modelling you
Smoke and Sacrifice leans clearly harder on variance.
Grand Theft Auto V
Some mission and lobby randomness.
Smoke and Sacrifice
Ecology interactions and recipes are unknown until mapped
Smoke and Sacrifice leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Smoke and Sacrifice
Crafting chains and ecosystem manipulation are the solvable core
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.