head to head
vs
Half-Life 2vsSky Destroyer
Half-Life 2 leans Execution (Pure Mechanics); Sky Destroyer leans Execution (Pure Mechanics).
Half-Life 2Sky Destroyer
Axis by axis
Execution6 vs 7
Sky Destroyer leans harder on execution: Aiming and dodging on rails is the entire test
Reads1 vs 0
Half-Life 2 leans harder on reads: Combine AI scripted, non-adaptive.
Variance1 vs 1
Even - both lean on variance about the same.
Optimization3 vs 3
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.