head to head
vs
Halo 3vsQuake III Arena
Halo 3 leans Execution (Pure Mechanics); Quake III Arena leans Execution (Pure Mechanics).
Halo 3Quake III Arena
Axis by axis
Execution8 vs 9
Quake III Arena leans harder on execution: Rail and rocket aim at speed is the entire game
Reads5 vs 6
Quake III Arena leans harder on reads: Human opponents adapt their routes and timings in direct response
Variance2 vs 2
Even - both lean on variance about the same.
Optimization5 vs 5
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.