head to head
Neither is simply harder - they are hard in different places. Grand Theft Auto V demands more reads; Tomb Raider: The Last Revelation demands more optimization.

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

Optimization · Practiced Mastery
An Egypt-spanning classic Raider where interconnected routing is the real test.
Grand Theft Auto V leans Execution (Practiced Mastery); Tomb Raider: The Last Revelation 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.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Tomb Raider: The Last Revelation
Classic grid platforming with precise jump setups
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Tomb Raider: The Last Revelation
Fixed enemy and trap scripts throughout Egypt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Some mission and lobby randomness.
Tomb Raider: The Last Revelation
Interconnected level secrets are unknown initially
Tomb Raider: The Last Revelation leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Tomb Raider: The Last Revelation
Hub-style backtracking makes routing the core puzzle
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.