head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
Driving and gadget timing through scripted spy missions.

Execution · Pure Mechanics
Forgiving spectacle combat that lightly tests combo execution.
007 Racing leans Execution (Pure Mechanics); Star Wars: The Force Unleashed II leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
007 Racing
Driving under fire while aiming gadgets is the main demand
Star Wars: The Force Unleashed II
Combo timing and dodges carry the spectacle combat
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
007 Racing
Enemy cars follow mission scripts
Star Wars: The Force Unleashed II
Stormtroopers follow simple fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
007 Racing
Mission events repeat identically
Star Wars: The Force Unleashed II
Encounters are scripted and identical every run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
007 Racing
Learning mission solutions and weapon use is light study
Star Wars: The Force Unleashed II
Upgrade choices barely matter against forgiving difficulty
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.