head to head
vs
Grand Theft Auto IVvsSonic Free Riders
Grand Theft Auto IV leans Execution (Practiced Mastery); Sonic Free Riders leans Execution (Pure Mechanics).
Grand Theft Auto IVSonic Free Riders
Axis by axis
Execution5 vs 6
Sonic Free Riders leans harder on execution: Full-body Kinect steering is a physical (if unreliable) motor test
Reads1 vs 1
Even - both lean on reads about the same.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization3 vs 2
Grand Theft Auto IV leans harder on optimization: Mission routing and weapon picks learnable.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.