head to head
vs
Half-Life 2vsSerious Sam Advance
Half-Life 2 leans Execution (Pure Mechanics); Serious Sam Advance leans Execution (Practiced Mastery).
Half-Life 2Serious Sam Advance
Axis by axis
Execution6 vs 6
Even - both lean on execution about the same.
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 4
Serious Sam Advance leans harder on optimization: Ammo routing and wave order reward memorisation
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.