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

Execution · Practiced Mastery
A short graphics showcase testing basic shooter execution for twenty minutes.

Execution · Practiced Mastery
Motion-controlled spectacle testing little beyond gesture compliance.
Half-Life 2: Lost Coast leans Execution (Practiced Mastery); Kinect Star Wars leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2: Lost Coast
A short stretch of standard Half-Life 2 gunplay
Kinect Star Wars
Flailing gestures at the sensor is the only input test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2: Lost Coast
A handful of scripted Combine soldiers
Kinect Star Wars
Everything on screen is scripted spectacle
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2: Lost Coast
One fixed level with nothing hidden
Kinect Star Wars
Sequences replay identically
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2: Lost Coast
Too brief to develop any systems layer
Kinect Star Wars
Little system depth beyond gesture recognition quirks
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.