head to head
vs
Sonic Adventure DX: Director's CutvsTest Drive 6
Sonic Adventure DX: Director's Cut leans Execution (Practiced Mastery); Test Drive 6 leans Execution (Pure Mechanics).
Sonic Adventure DX: Director's CutTest Drive 6
Axis by axis
Execution6 vs 7
Test Drive 6 leans harder on execution: Cornering at speed through traffic is the entire challenge
Reads0 vs 1
Test Drive 6 leans harder on reads: AI racers follow rubber-band scripts, not minds to model
Variance1 vs 1
Even - both lean on variance about the same.
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.