head to head
Halo 3vsSplitgate: Arena Reloaded
Halo 3 leans Execution (Pure Mechanics); Splitgate: Arena Reloaded leans Execution (Competitive PvP).
Halo 3Splitgate: Arena Reloaded
Axis by axis
Execution8 vs 8
Even - both lean on execution about the same.
Reads5 vs 6
Splitgate: Arena Reloaded leans harder on reads: Predicting where humans will portal from is constant
Variance2 vs 2
Even - both lean on variance about the same.
Optimization5 vs 4
Halo 3 leans harder on optimization: Power-weapon timers and map control
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

