head to head
vs
Half-Life Deathmatch: SourcevsHalo: Combat Evolved
Half-Life Deathmatch: Source leans Execution (Pure Mechanics); Halo: Combat Evolved leans Execution (Practiced Mastery).
Half-Life Deathmatch: SourceHalo: Combat Evolved
Axis by axis
Execution8 vs 7
Half-Life Deathmatch: Source leans harder on execution: Aim, bunny-hopping and snap reactions decide duels
Reads4 vs 3
Half-Life Deathmatch: Source leans harder on reads: Predicting human movement and spawn timing matters
Variance1 vs 2
Halo: Combat Evolved leans harder on variance: Covenant AI varies tactics slightly
Optimization4 vs 5
Halo: Combat Evolved leans harder on optimization: Weapon sandbox knowledge and encounter routing
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.