head to head
vs
FlatOut 4: Total InsanityvsSplit/Second
FlatOut 4: Total Insanity leans Execution (Pure Mechanics); Split/Second leans Execution (Pure Mechanics).
FlatOut 4: Total InsanitySplit/Second
Axis by axis
Execution7 vs 8
Split/Second leans harder on execution: Drafting, drifting and dodging collapsing set pieces.
Reads2 vs 2
Even - both lean on reads about the same.
Variance3 vs 4
Split/Second leans harder on variance: Triggered explosions and route changes upend races constantly.
Optimization4 vs 4
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.