head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
Combo execution and dodge timing through scripted grindhouse brawls.

Execution · Pure Mechanics
Forgiving spectacle combat that lightly tests combo execution.
Shank leans Execution (Pure Mechanics); Star Wars: The Force Unleashed II leans Execution (Pure Mechanics).
Shank leans a little harder on execution, though the gap is small.
Shank
Combo juggling and dodge timing carry every brawl
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.
Shank
Enemies and bosses attack on fixed patterns
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.
Shank
Hand-built levels with no randomness
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.
Shank
Weapon-swap combo routing rewards some lab work
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.